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        As filed with the Securities and Exchange Commission on September 10, 2003

        Registration Statement No. 333-103913



SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


AMENDMENT NO. 2
TO
FORM F-3
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933


BOOKHAM TECHNOLOGY PLC

(Exact name of registrant as specified in its charter)


England and Wales
(State or other jurisdiction of
incorporation or organization)
  Not Applicable
(I.R.S. Employer Identification No.)

90 Milton Park
Abingdon, Oxfordshire
OX14 4RY
United Kingdom
(011) (44) 1235-837 000

 

Bookham Technology, Inc.
10015 Old Columbia Road, Suite B-215
Columbia, Maryland 21046
(410) 290-6225
(Address and telephone number of registrant's
principal executive offices)
  (Name, address and telephone number
of agent for service)

Copies to:
Richard Eaton, Esq.
Hale and Dorr
Alder Castle, 10 Noble Street
London EC2V 7QJ
United Kingdom
Telephone: 44-20-7645-2400
Telecopy: 44-20-7645-2424
  John A. Burgess, Esq.
Hale and Dorr LLP
60 State Street
Boston, Massachusetts 02109
Telephone: (617) 526-6000
Telecopy: (617) 526-5000

Approximate date of commencement of proposed sale to public:
From time to time after the effective date of this Registration Statement.

        If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. o

        If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ý

        If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o 333-            .

        If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o 333-            .

        If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. o


CALCULATION OF REGISTRATION FEE


Title of Shares to be Registered
  Amount to be
Registered

  Proposed Maximum
Offering Price
Per Share(1)

  Proposed Maximum
Aggregate
Offering Price(1)

  Amount of
Registration Fee(2)


Ordinary Shares, 1/3p par value per share, in the form of ordinary shares or American Depositary Shares(3)   61,000,000   $1.12   $68,320,000   $5,527.09

(1)
Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) under the Securities Act and based upon the average of the high and low prices of the Company's ordinary shares, each represented by one American Depositary Share, on The NASDAQ National Market on March 17, 2003.

(2)
Previously paid.

(3)
These shares are being registered for resale on behalf of the selling stockholders.


        The Company hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Company shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), shall determine.




        The information in this prospectus is not complete and may be changed. The selling stockholders named in this prospectus may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and the selling stockholders named in this prospectus are not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to completion, dated                        , 2003

         PROSPECTUS

         BOOKHAM TECHNOLOGY PLC

         61,000,000 ORDINARY SHARES


        This prospectus relates to resales of ordinary shares (in the form of ordinary shares or American Depositary Shares) previously issued by Bookham Technology plc to subsidiaries of Nortel Networks Corporation in connection with our acquisition of the optical amplifier and optical transmitter and receiver businesses of Nortel Networks Corporation.

        We are not selling any shares pursuant to this prospectus and will not receive any proceeds from the sale of the shares by the selling stockholders.

        The selling stockholders identified in this prospectus, or their transferees or other successors-in-interest, may offer the shares from time to time through public or private transactions at prevailing market prices, at prices related to prevailing market prices or at privately negotiated prices.

        Our American Depositary Shares, each of which represents one ordinary share, are traded on The NASDAQ National Market under the symbol "BKHM." Our ordinary shares are traded on the London Stock Exchange under the symbol "BHM." On September 8, 2003, the closing sale price of our ADSs on NASDAQ was $1.76 per share and the closing sale price of our ordinary shares on the London Stock Exchange was £1.12 per share. You are urged to obtain current market quotations for our ordinary shares and ADSs.


        Investing in our ordinary shares and ADSs involves a high degree of risk. See "Risk Factors" beginning on page 4.


        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.


The date of this prospectus is                        , 2003.



TABLE OF CONTENTS

 
  Page
PROSPECTUS SUMMARY   3
RISK FACTORS   4
CAPITALIZATION   19
USE OF PROCEEDS   20
THE OFFERING   21
SELLING STOCKHOLDERS   23
MATERIAL CHANGES   26
PLAN OF DISTRIBUTION   27
EXPENSES OF ISSUANCE AND DISTRIBUTION   29
SHARE CAPITAL   30
DIVIDENDS   32
EXPERTS   33
LEGAL MATTERS   33
WHERE YOU CAN FIND MORE INFORMATION   33
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE   33
ENFORCEMENT OF CIVIL LIABILITIES   35
SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION   36
FINANCIAL INFORMATION   F-1

        Bookham Technology plc's executive offices are located at 90 Milton Park, Abingdon, Oxfordshire OX14 4RY, England and our telephone number is (011) (44) 1235-837 000. The address of our United States office is Bookham Technology, Inc., 10015 Old Columbia Road, Suite B-215, Columbia, Maryland 21046 and our telephone number at that location is (410) 290-6225. Our Internet address is www.bookham.com. The information on our Internet website is not incorporated by reference in this prospectus. Unless the context otherwise requires references in this prospectus to "Bookham," "we," "us," and "our" refer to Bookham Technology plc and its subsidiaries. References in this prospectus to "Nortel Networks" refer to Nortel Networks Corporation and its direct and indirect subsidiaries, collectively.

        We have not authorized anyone to provide you with information different from that contained or incorporated by reference in this prospectus. The selling stockholders are offering to sell, and seeking offers to buy, our ordinary shares and ADSs only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of ordinary shares or ADSs.

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PROSPECTUS SUMMARY

        This summary does not contain all of the information that you should consider before investing in our ordinary shares or ADSs. You should read the entire prospectus carefully, especially the risks of investing in our ordinary shares and ADSs discussed under "Risk Factors."


Bookham Technology plc

        We principally design, manufacture and market optical components, modules and subsystems for the telecommunications industry. We also manufacture high speed electronics components for the telecommunications, defense and space industries. In 2002, we redefined the company through our acquisitions of the optical components business of MOC and the optical amplifier and optical transmitter and receiver businesses of Nortel Networks Corporation, in order to meet customer demand for full-line, independent, solutions-capable partners who can provide a full range of components as well as complete subsystems. These acquisitions enable us to offer a comprehensive product set comprising actives, passives and amplifiers based both on new technologies and products that are established and widely deployed.


The Offering

 
   
Ordinary Shares, 1/3p par value per share, in the form of ordinary shares or American Depositary Shares, offered by selling stockholders   61,000,000 shares

Nature of offering

 

The shares are being registered for resale from time to time by the selling stockholders: Nortel Networks Optical Components Limited and Nortel Networks Limited

Use of proceeds

 

Bookham will not receive any proceeds from the sale of shares in this offering

NASDAQ National Market symbol

 

BKHM

London Stock Exchange symbol

 

BHM

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RISK FACTORS

        Investing in our ordinary shares and ADSs involves a high degree of risk. You should carefully consider the risks and uncertainties described below before purchasing our ordinary shares or ADSs. If any of the following risks actually occur, our business, financial condition or results of operations would likely suffer. In that case, the trading price of our shares could fall, and you may lose all or part of the money you paid to buy our ordinary shares or ADSs.

WE HAVE GENERATED SUBSTANTIAL LOSSES TO DATE AND WILL GENERATE SUBSTANTIAL LOSSES IN THE FUTURE UNLESS WE ACHIEVE SIGNIFICANT REVENUE GROWTH

        We incurred substantial net losses in 2000, 2001 and 2002 and in the first half of 2003. In addition, while during the course of 2003, we have indicated that we believed we could potentially achieve break-even by the end of 2003, and intended to reduce our cash break-even point between £30 million ($48 million) and £35 million ($56 million) of revenue per quarter by the end of 2003, we believe that given current market uncertainties, it is not currently possible to predict when, or at what level, break-even operations will, if ever, be achieved. We may never generate sufficient revenues to achieve profitability. Even if we do achieve profitability, we may not sustain or increase profitability on a quarterly or annual basis in the future. To date, we have been financed largely by the capital contributions of our key investors, as well as approximately £297.4 million of net proceeds we received as a result of our initial public offering in April 2000 and our follow-on offering in September 2000. Our existing cash balances may not be sufficient to cover future losses.

OUR SUCCESS WILL DEPEND ON THE EXTENT TO WHICH DEMAND FOR OPTICAL COMPONENTS IMPROVES AND INCREASES AND THE GLOBAL ECONOMY IMPROVES

        Projections of dramatic growth in demand for bandwidth between 1999 and 2002 led to telecommunications carriers investing large amounts of capital in developing and expanding their optical networks. When the projected growth did not materialize in 2001, telecommunications companies ceased the expansion of their networks, and large portions of those networks remain unused. As a result, the demand by telecommunications carriers for systems declined dramatically in 2001 and, in turn, the demand for components supplied by us and other vendors to the systems providers also fell sharply. This decline in demand persisted in 2002. We are unable to predict whether and how long the decline in demand will last and, in particular, how long it will take before the excess capacity of existing network systems is fully utilized and demand for additional capacity generated. Continuing unfavorable economic conditions and reduced capital spending of a global nature has also affected demand for our products. We are unable to predict how long the economic slowdown will continue, and whether it will worsen. The continued uncertainties in the global economy make it difficult for us to anticipate revenue levels and therefore to make appropriate estimates and plans regarding management of costs. The decline in demand for optical components and the economic slowdown has had, and will continue to have, a material adverse effect on our results of operations, and we are not able to predict when this adverse effect will cease.

RISKS ASSOCIATED WITH THE ACQUISITION AND INTEGRATION OF THE ACQUIRED NORTEL NETWORKS BUSINESSES

Our debt re-payment obligations to Nortel Networks may affect our ability to operate our business.

        In connection with our acquisition of the optical transmitter and receiver businesses of Nortel Networks Corporation, referred to in this Prospectus as the acquired Nortel Networks businesses, we have issued to Nortel Networks secured and unsecured interest-bearing loan notes in the aggregate amount of $50 million. The secured loan notes, in the aggregate amount of $30 million are secured against all of our capital equipment and all of the assets of the acquired Nortel Networks businesses.

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The secured loan notes bear interest at the rate of 7% per year, increasing 0.25% per quarter beginning three months after issue until re-payment, up to a maximum rate of 10% per year, and are payable in full no later than November 8, 2005. The unsecured loan notes, in the aggregate principal amount of $20 million, bear interest at the rate of 4% per year and are payable in full no later than November 8, 2007. We are required to repay the notes, in full or in part, at earlier times upon the occurrence of various events, including an equity or equity-linked financing by us. Repayment of these debts will reduce cash otherwise available to us to fund operations, expand our business or for other corporate obligations.

Difficulties associated with integrating the acquired Nortel Networks businesses could harm our overall business operations.

        Although we have made significant progress in integrating the acquired Nortel Networks businesses and have substantially implemented our integration plans ahead of the anticipated schedule, we are still in the process of consolidating the Ottawa, Canada, wafer fabrication facility into our Caswell, England, facility. We expect that this consolidation will be completed by the end of 2003. This consolidation will present challenges, including:

        The success of our strategy depends on the success of the integration process. Although much of the integration is complete, there can be no assurance that the integration will be successful and it may result in unanticipated operational, developmental, personnel, or other problems. Any of these problems could adversely affect our results of operations. In addition, we have in the past and may in the future, incur special charges in connection with restructuring activities associated with the integration process, which could adversely affect our results of operations.

RISKS ASSOCIATED WITH OUR BUSINESS

We will be dependent on Nortel Networks as a customer over the duration of the Supply Agreement we have entered into with Nortel Networks Limited.

        In connection with our acquisition of the acquired Nortel Networks businesses in November 2002, we entered into a three-year, non-exclusive Supply Agreement with Nortel Networks Limited, a wholly-owned subsidiary of Nortel Networks Corporation. The acquired Nortel Networks businesses were historically dependent on their relationship with Nortel Networks Limited and, as a result, we expect to be highly dependent on sales to Nortel Networks Limited, at least during the term of the Supply Agreement. Historically, shipments of products to Nortel Networks Limited by the acquired Nortel Networks businesses have constituted over 73%, 52%, and 60%, respectively, of the total sales of these businesses in 2000, 2001 and the first half of 2002. In the first half of 2003, following the acquisition of the Nortel Networks businesses, the shipments of products to Nortel Networks Limited by the acquired Nortel Networks businesses constituted over 66% of the total sales of these businesses. In addition, Nortel Networks Limited, including its affiliates, has been one of our significant customers during the past three years with respect to sales of other Bookham products. During the six quarter period between November 8, 2002 and March 31, 2004 (the "Minimum Commitment Period"), Nortel Networks Limited is obliged to purchase from us a minimum of $120 million of products and related services regardless of market demand, subject to our meeting certain customary performance criteria

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relating to quality and delivery, among other things. In the fourth quarter of 2002 and the first half of 2003 we sold Nortel Networks Limited $54.2 million of products and related services pursuant to the Supply Agreement. However, if Nortel Networks' financial condition deteriorates because the continued severe slowdown in the telecommunications industry or due to changes in its own financial position, Nortel Networks Limited may be unable to perform, in full or in part, its obligations under the Supply Agreement. Under certain circumstances, including a bankruptcy proceeding initiated by or against Nortel Networks and/or Nortel Networks Limited, amounts owing to us by Nortel Networks Limited might not be recoverable and the Supply Agreement might no longer be enforceable against Nortel Networks Limited. For the six months ended June 30, 2003, Nortel Networks reported a net loss of $150 million. Nortel Networks has previously announced workforce reductions and facilities closures. If Nortel Networks Limited is unable to meet its purchasing obligations under the Supply Agreement, or ceases to purchase a substantial amount of products from us after the Minimum Commitment Period, our results of operations and business prospects would be materially adversely affected.

We may not be able to retain Nortel Networks Limited as a customer after expiration of the Supply Agreement.

        Our revenues over the period of the Supply Agreement with Nortel Networks Limited may not be indicative of future revenues as there can be no assurance that Nortel Networks Limited will continue to purchase products in the same quantity after the expiration of the Minimum Commitment Period, or at all, after the expiration of the Supply Agreement. Our ability to retain Nortel Networks Limited as a customer after the Supply Agreement has expired will depend on Nortel Networks Limited's continuing needs for products supplied by us. Our revenues from Nortel Networks Limited were £10.7 million, or 31% of our total revenues, for the year ended December 31, 2002, and £25 million, or 58% of our total revenues, for the first half of 2003. If sales under the Supply Agreement do not continue after the Minimum Commitment Period and/or the Supply Agreement expires, our revenues will be adversely affected.

We and our customers are each dependent upon a limited number of customers.

        Historically, we have generated most of our revenues from a limited number of customers. For example, in each of the three years ending December 31, 2002, and in the first quarter of 2003, sales to five customers accounted for approximately 80% of our net revenue. In this same period, sales to two of those customers, Nortel Networks and Marconi Communications, accounted for 55% and 19%, respectively, of our net revenue in 2000, 40% and 15%, respectively, in 2001, 31% and 38%, respectively, in 2002 and 60% and 13%, respectively, in the first half of 2003. In the second quarter of 2003, sales to Huawei accounted for a further 10% of our net revenue. Our dependence on a limited number of customers is due to the fact that the telecommunications equipment industry is dominated by a small number of large companies. That market is currently consolidating, thereby reducing the number of potential customers in the industry. This trend may further increase our dependence on a small number of customers. Similarly, our customers depend on a small group of telecommunications carrier customers. In addition, we expect to generate a significant amount of our revenues from supply agreements with Nortel Networks Limited and Marconi Communications. These supply agreements are of limited duration and Nortel Networks and Marconi may not continue as our customers after the agreements expire. The Marconi Communications supply agreement expires in December 2003, and the Nortel Networks supply agreement expires in November 2005. The loss of one or more of our customers could materially adversely affect our revenues and results of operations. In addition, many of our customers, and their telecommunications carrier customers, have been affected by the downturn in the telecommunications industry and are in poor financial condition. The condition of these companies may affect the amount and type of orders they are able to place with us or their ability to survive.

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In order to fund our operations, increase manufacturing capacity or broaden our product range, we may need additional capital in the future that may not be available on acceptable terms, if at all.

        While we had approximately £71 million ($118 million) in cash deposits as at June 29, 2003, we also have debt repayment obligations in the aggregate amount of $50 million under the secured loan notes and the unsecured loan notes issued in connection with the acquisition from Nortel Networks. Our cash outflow from operations was £27.4 million ($45.5 million) for the first half of 2003. While we anticipate reducing our cash break-even point between £30 million ($48 million) and £35 million ($56 million) per quarter by the end of 2003, there can be no assurance that we will do so. Cash flow from operations is not presently sufficient to cover operating expenses and capital expenditure needs. As a result, we may need additional capital in the future to fund our operations, finance investment in equipment and corporate infrastructure, to increase the range of products we offer and respond to competitive pressures and perceived opportunities. There can be no assurance that additional financing will be available on acceptable terms, if at all. If we raise additional funds by selling equity securities, the relative equity ownership of our existing investors could be diluted and the new investors could obtain terms more favourable than previous investors. In addition, if we undertake equity or equity-linked financings prior to the repayment of the loan notes in full, we will be required to use the proceeds to repay all or a portion of the loan notes, depending on the amount of the equity or equity-linked financing. Any proceeds used for this purpose will not be available for other uses. If we raise additional funds through debt financing, we could incur significant borrowing costs. A failure to obtain additional funding could prevent us from making expenditures that would allow us to grow our business or maintain our operations.

We have incurred significant restructuring charges as a result of restructuring activities, which could adversely affect our results of operations.

        In light of the restructuring and cost reduction measures that we have been required to take over the course of 2002 and 2003 in response to the depressed demand for optical components, we have incurred significant restructuring related charges. Such charges totaled £3.0 million ($4.8 million) and £1.8 million ($2.9 million), respectively, for the quarters ended March 30 and June 29, 2003, and we anticipate that they will total between £14 million ($22.5 million) and £16 million ($25.8 million) for the quarter ended September 29, 2003. These charges, along with any other charges, could significantly adversely affect our results of operations.

We may have difficulty obtaining additional capital because of reduced funding of and lending to companies in the optical components industry.

        The optical components sector of the telecommunications industry, in which we operate, has been severely affected by the downturn in the global economy. As a result, companies in this sector are experiencing difficulty in raising capital, whether through equity or debt financing. Because the share values of optical component suppliers have declined markedly during the downturn, these companies have experienced difficulty in raising capital through equity financings because of lack of investor interest. We may therefore experience difficulty raising additional capital or may have to accept capital financing on less than optimal terms. We may also be unsuccessful in our efforts to raise additional capital.

Our future success will depend on our ability to manufacture and sell commercial quantities of our product lines, some of which have recently been commercially introduced and may not achieve commercial acceptance.

        For the year ended December 31, 2002, and the first half of 2003, our revenues were derived primarily from sales of products of the acquired Nortel Networks businesses to Nortel Networks Limited under the supply agreement and, to a lesser extent, from sales under the supply agreement

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with Marconi Communications and sales and development of our ASOC and related products. We believe that sales of the products we acquired in connection with the acquisition of the business and assets of MOC and the acquired Nortel Networks businesses in 2002 will continue to account for a substantial portion of our future revenues, at least through the term of our supply agreements with Marconi Communications and Nortel Networks Limited. In 2002, ASOC revenues constituted less than 10% of our total revenues, and on July 30, 2003, we announced that we were discontinuing further ASOC investment. We therefore do not expect sales of those products to account for a significant percentage of our revenue for the foreseeable future. In connection with our acquisitions from Nortel Networks and MOC, we added several new products to our product line, some of which are not yet qualified for volume production. The term "qualified" is used to describe that the product has successfully completed a specific series of tests that demonstrate it meets both industry-wide standards and is suitable for customer specific use. We cannot assure investors that these products, or the proprietary technology upon which any of these products is based, will achieve broad market acceptance.

        In addition, a decline in demand for any of our product lines due to faults or quality problems, the introduction of superior products by competitors, technological changes or other reasons could undermine confidence in and demand for our products. This, in turn, could have a material adverse effect on our customer relationships and business prospects.

Our results of operations may suffer if we do not effectively manage our inventory and we may incur inventory-related charges.

        To achieve commercial success with our product lines, we need to manage our inventory of component parts and finished goods effectively to meet changing customer requirements. The ability to accurately forecast customers' product needs in the current economic environment is very difficult. Some of our products and supplies have in the past and may in the future become obsolete while in inventory due to rapidly changing customer specifications or a decrease in customer requirements. If we are not able to effectively manage our inventory, we may need to write off unsaleable or obsolete inventory, which would adversely affect results of operations. We have from time to time incurred significant inventory-related charges. For example, in 2001 we incurred charges related to inventory write-downs on excess inventory of £4.65 million and, in 2002, we incurred charges related to inventory write-downs on excess inventory of £3.3 million ($5.3 million), which includes write downs of £1.2 million ($1.9 million) related to the downsizing of our ASOC product line. In the first half of 2003, we did not incur charges related to inventory write-downs on excess inventory. We may, however, incur significant similar charges in future periods. These charges, along with any other charges such as the special charges we incurred in 2001 and 2002 relating to restructuring activities, could significantly adversely affect our results of operations.

The inventory we acquired as part of the acquisition of the acquired Nortel Networks businesses may not prove to be saleable and may require further write-downs.

        We recorded a fair value of £26.4 million ($42.5 million) for the inventory we obtained with the acquired Nortel Networks businesses. In view of our limited experience in managing our business since the acquisition from Nortel Networks, and the difficulty in the current economic climate of forecasting customer needs, we cannot assure investors that this inventory is saleable. If this inventory becomes obsolete, we will be required to write-down its value. Although prior to completion of the acquisition of the Nortel Networks businesses our Chief Executive Officer stated that he believed the inventory from the Nortel Networks businesses could represent $100 million to $150 million in cash, this should not be relied upon as an indicator of the actual fair value of the acquired inventory, as this comment was a statement of our Chief Executive Officer's beliefs based on a preliminary assessment of the inventory

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prior to the completion of the acquisition of the Nortel Networks business and a final assessment of the value of the inventory had not been made at that time.

Fluctuations in the demand for optical components create significant uncertainties for our business.

        Our business is dependent upon product sales to telecommunications network system providers. These providers in turn are dependent for their business upon orders for fibre-optic systems from telecommunication carriers. Business fluctuations affecting our system provider customers or their telecommunication carrier customers have affected our business and will affect our business in the future. We are currently experiencing a period of industry-wide overcapacity and declining demand in all of our markets and these conditions are expected to continue. These conditions have resulted in excess inventory, which we have written off in 2001 and 2002, and an underutilization of manufacturing capacity. Moreover, sales often reflect orders shipped in the same quarter in which the orders are received, which makes sales vulnerable to short-term fluctuations in customer demand and difficult to predict. In addition, the timing of customer orders and the subsequent cancellation, modification or rescheduling of certain of these orders have affected and will in the future affect results of operations from quarter to quarter, particularly since these customers typically order in large quantities. The cancellation, rescheduling or modification of customer orders may reflect reductions in carrier capital spending and inventory adjustments by our customers in response to less certain carrier demand.

Our products are complex, may take longer to develop than originally anticipated and are highly dependent on the needs of our customers' design and development programmes.

        Many of our new products must be tailored to customer specifications. As a result, we are constantly developing new products and using new technologies in those products. These products often take 12 to 18 months to develop because of their complexity and the changing customer specifications in the course of the development cycle. We fund a significant majority of the design work, but have in the past received small contributions from customers which we credit against research and development expenditure. In the event that a customer cancels or modifies a design project before we begin large-scale manufacture of the product and receive revenue from the customer, we will not be able to recover those expenses and results of operations will be adversely affected. It is difficult to predict with any certainty, particularly in the present economic climate, the frequency with which customers will cancel or modify their projects, or the effect on results of operations. The complex production process for these products requires careful and constant maintenance of fine tolerances that can be disrupted by unknown or unforeseen causes. These products may also contain defects when first introduced or as new versions are released. We could also incur significant unanticipated costs in attempting to complete the development of new products or to fix defective products.

We may experience low manufacturing yields.

        Manufacturing yields depend on a number of factors, including the volume of production due to customer demand and the nature and extent of changes in specifications required by those customers for which we perform design-in work. Higher volumes due to demand for a fixed, rather than continually changing, design generally result in higher manufacturing yields, whereas lower volume production generally results in lower yields. In addition, lower yields may result, and have in the past resulted, from commercial shipments of products prior to full manufacturing qualification to the applicable specifications. Changes in manufacturing processes required as a result of changes in product specifications and customer needs have historically caused, and may in the future cause, significantly reduced manufacturing yields, resulting in low or negative margins on those products. Moreover, an increase in the rejection rate of products during the quality control process either pre, during or post manufacture results in lower yields and margins. Finally, manufacturing yields and margins can also be lower if we receive or inadvertently use defective or contaminated materials from our suppliers.

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We could be adversely affected if we are unable to manage manufacturing capacity to meet fluctuating levels of demand for our products.

        A significant and steady decline in the demand for optical components during 2001 and into 2002 resulted in marked underutilization of our manufacturing capacity and, in July 2002, we announced that we were closing our manufacturing facilities in Swindon, U.K. and Maryland, U.S. In addition, we acquired another manufacturing facility in Caswell, U.K. as part of the MOC acquisition, which is presently underutilized. We are currently in the process of closing our Ottawa, Canada manufacturing facility and transferring its operations to our Caswell site and closing our Abingdon, U.K. manufacturing facility. In connection with the acquired Nortel Networks businesses, we added four more manufacturing facilities located in the U.K., Canada and Switzerland, which are currently also underutilised. The fluctuations in customer demand, combined with the acquisition of this additional manufacturing space, present challenges and will require us to evaluate manufacturing capacity and to assess and predict demand appropriately in order to ensure availability and staffing of manufacturing facilities to meet that demand. Failure to do so on a timely basis could have an adverse impact upon gross margins or have the effect of increasing overall operating expenses.

We may be faced with product liability claims.

        Despite quality assurance measures, there remains a risk that defects may occur in our products. The occurrence of any defects in our products could give rise to liability for damages caused by such defects and for consequential damages. They could, moreover, impair the market's acceptance of our products. Both could have a material adverse effect on our business and financial condition. In order to mitigate the risk of liability for damages, we carry product liability insurance with a £10 million aggregate annual limit and errors and omissions insurance with a $5 million annual limit. There can be no assurance that this insurance could adequately cover our costs arising from defects in our products or otherwise.

We sell most of our new products at negative gross margins and declining average selling prices could adversely impact our ability to become profitable.

        We sell most of our new products at negative gross margins due largely to our fixed manufacturing overheads. If we are not able to improve manufacturing yields and decrease costs as the volume of new products increases, the impact of these negative gross margins could be exacerbated and could have an adverse effect on our financial results. Average selling prices for telecommunications optical components have declined in recent years and suffered from a sharp decline in 2001 and continued to decline in 2002. We anticipate that the average selling prices of our products will continue to decline over time. If we are unable to reduce manufacturing costs at least at the same rate, gross margins and financial results will be adversely affected.

If we fail to protect our intellectual property rights, or are unable to obtain the right to use technologies owned by others, our business could be materially impaired.

Our intellectual property rights may not be adequately protected.

        Our future success will depend, in large part, upon our intellectual property rights, including patents, design rights, trade secrets, trademarks, know-how and continuing technological innovation. We maintain an active programme of identifying technology appropriate for patent protection. Our practice is to require employees and consultants to execute non-disclosure and proprietary rights agreements upon commencement of employment or consulting arrangements. These agreements acknowledge our exclusive ownership of all intellectual property developed by the individuals during their work for us and require that all proprietary information disclosed will remain confidential. Although such agreements may be binding, they may not be enforceable in all jurisdictions.

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        Our intellectual property portfolio is an important corporate asset. The steps we have taken and may take in the future to protect our intellectual property may not adequately prevent misappropriation or ensure that others will not develop competitive technologies or products. We cannot assure investors that our competitors will not successfully challenge the validity of these patents, or design products that avoid infringement of our propriety rights with respect to our technology. There can be no assurance that other companies are not investigating or developing other similar technologies, that any patents will issue from any application pending or filed by us or that, if patents do issue, the claims allowed will be sufficiently broad to deter or prohibit others from marketing similar products. In addition, we cannot assure investors that any patents issued to us will not be challenged, invalidated or circumvented, or that the rights thereunder will provide a competitive advantage to us. Further, the laws of certain territories in which our products are or may be developed, manufactured or sold, including South East Asia, may not protect our products and intellectual property rights to the same extent as the laws of the United Kingdom, Continental European countries and the United States.

Our products may infringe the intellectual property rights of others.

        Companies in the industry in which we operate frequently receive claims of patent infringement or infringement of other intellectual property rights. In this regard, third parties may in the future assert claims against us concerning our existing products or with respect to future products under development. We have entered into and may in the future enter into indemnification obligations in favor of some customers that could be triggered upon an allegation or finding that we are infringing other parties' proprietary rights. We may need in the future to negotiate with holders of patents relevant to our business. We may not in all cases be able to resolve allegations of infringement through licensing arrangements, settlement, alternative designs or otherwise. We may take legal action to determine the validity and scope of the third-party rights or to defend against any allegations of infringement. In the course of pursuing any of these means we could incur significant costs and diversion of our resources. Due to the competitive nature of our industry, it is unlikely that we could increase our prices to cover such costs. In addition, such claims could result in significant penalties or injunctions that could prevent us from selling some of our products in certain markets or result in settlements that require payment of significant royalties that could adversely affect our ability to price our products profitably.

If we fail to obtain the right to use the intellectual property rights of others necessary to operate our business, our ability to succeed will be adversely affected.

        The telecommunications and optical components markets in which we sell our products have experienced frequent litigation regarding patent and other intellectual property rights. Numerous patents in these industries are held by others, including academic institutions and our competitors. Optical component suppliers may seek to gain a competitive advantage or other third parties may seek an economic return on their intellectual property portfolios by making infringement claims against us. In the future we may need to obtain licence rights to patents or other intellectual property held by others to the extent necessary for our business. Unless we are able to obtain such licences on commercially reasonable terms, patents or other intellectual property held by others could inhibit our development of new products for our markets. Licences granting us the right to use third-party technology may not be available on commercially reasonable terms, if at all. Generally, a licence, if granted, would include payments of up-front fees, ongoing royalties or both. These payments or other terms could have a significant adverse impact on our operating results. Our larger competitors may be able to obtain licences or cross-licence their technology on better terms than we can, which could put us at a competitive disadvantage.

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Fluctuations in operating results and a long sales cycle could adversely affect the market price of our ordinary shares and ADSs.

        Our revenues and operating results are likely to fluctuate significantly in the future. The timing of order placement, size of orders and satisfaction of contractual customer acceptance criteria, as well as order delays or deferrals and shipment delays and deferrals, may cause material fluctuations in revenue. To date, customers have taken a long time to reach a decision to purchase our products. This lengthy sales cycle may cause our revenues and operating results to vary from period to period and it may be difficult to predict the timing and amount of any variation. The period between initial contact with the customer to the receipt of an actual purchase order has frequently been six months to a year or more. In addition, customers traditionally perform extensive process and product evaluation and testing of components before entering into purchase arrangements.

        Delays or deferrals in purchasing decisions may increase as we develop new or enhanced products. The current and anticipated dependence on a small number of customers increases the revenue impact of each customer's actions relative to these factors. Our expense levels in the future will be based, in large part, on our expectations regarding future revenue, and as a result net income for any quarterly period in which material orders are delayed could vary significantly.

        Because of these and other factors, investors should not rely on quarter-to-quarter comparisons of our results of operations as an indication of future performance. It is possible that, in future periods, results of operations will be below the estimates of public market analysts and investors. Such a discrepancy could cause the market price of our ordinary shares and ADSs to decline.

Our business will be adversely affected if we cannot manage the significant changes in the number of our employees and the size of our operations.

        We experienced a significant increase in the number of our employees, the scope of our operating and financial systems and the geographic area of our operations in 1999 and 2000. In 2001, however, we experienced a significant reduction in the number of employees and scope of our operations because of declining demand for our products. In addition, a number of our manufacturing facilities were under-utilized in light of reduced demand. In 2002, our employee numbers, scope of operations and the geographic area of our operations again significantly expanded through acquisitions, although the increase in our headcount was offset by planned employee reductions. In particular, the number of our employees increased from 226 at December 31, 1999 to 978 at December 31, 2000 and then decreased to 643 at December 31, 2001. As of June 29, 2003, our headcount was 1,865. This figure includes approximately 1,200 employees who transferred to us with the acquired Nortel Networks businesses, and reflects reductions according to plan, including those related to the closure of the Swindon, U.K. and Maryland, U.S., manufacturing facilities. In light of the current demand for our targeted markets, we have announced a further reduction in headcount of approximately 150 persons, principally in ASOC-related and research and development functions. In addition, we have decided to significantly downsize the manufacturing and development activities associated with our ASOC product line at our Abingdon facility as part of the realignment of our product lines. These recent significant changes in headcount have placed, and will continue to place, a significant strain on management and other resources. We are continuing to evaluate our operating expenses in light of our revenues. Future significant changes are likely as we respond to changes in the economy and continue our strategy of acquiring complementary businesses. There is a risk that, during such periods of growth or decline, management will not sufficiently coordinate the roles of individuals to ensure that all areas receive appropriate focus and attention. To manage our size effectively, we will need to continue to improve our operational, financial, accounting and management systems and to motivate and effectively manage our employees. We will also need to continue to establish and maintain adequate systems of control to support the size of our operations. If we are unable to manage our headcount, appropriate levels of manufacturing capacity and the scope of our operations effectively, the cost and quality of our products

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may suffer and we may be unable to attract and retain key personnel and develop and market new products. In addition, the reduction in research and development personnel may have an adverse impact on the development of new products and enhancement of existing product offerings.

We expect to acquire businesses as part of our strategy and we will need to integrate them successfully.

        Acquisitions have historically been an important part of our business strategy and will form part of our strategy in the future. Any acquisition transaction could be material in size and involve the issue of a significant number of new equity or debt securities and/or the payment of substantial cash consideration. If we fund acquisitions in whole or in part through the issue of equity securities, our existing shareholders may experience substantial dilution. We may also be required to make significant investment in acquired companies to facilitate commercialization of their own products or to support the integration of their operations with ours. Any acquisition may also involve significant management time and attention, which could cause disruption to our overall operations. Moreover, if we are unable to integrate successfully any newly acquired business or technologies, we may be unable to achieve our strategic goals and our business could suffer. Specifically, we are now in the process of integrating MOC's operations and the operations of the acquired Nortel Networks businesses with our existing business and may experience problems in connection with the integration. Finally, changes by the U.S. Financial Accounting Standards Board in the rules for merger accounting may affect the way in which we account for future acquisitions under U.S. GAAP. For example, the elimination of the "pooling" method of accounting for mergers may increase the amount of goodwill that we would be required to recognize if we acquire another company, which may have an adverse financial impact on our future net loss or net income.

We depend on a limited number of suppliers who could disrupt our business if they stopped, decreased or delayed shipments.

        We depend on a limited number of suppliers of raw materials and equipment used to manufacture our products. Some of these suppliers are sole sources. We typically have not entered into long-term agreements with our suppliers and, therefore, these suppliers generally may stop supplying materials and equipment at any time. The reliance on a sole or limited number of suppliers could result in delivery problems, reduced control over product pricing and quality, and an inability to identify and qualify another supplier in a timely manner. Any supply deficiencies relating to the quality or quantities of materials or equipment we use to manufacture our products could adversely affect our ability to fulfill customer orders or our financial results of operations.

We may not be able to operate our business successfully if we lose any member of our senior management team.

        Our future success will depend, in large part, on the continued service of our key management and technical personnel, in particular our founder and Chairman, Dr. Andrew G. Rickman, and our Chief Executive Officer and President, Dr. Giorgio Anania. If either of these individuals becomes unable or unwilling to render his services and expertise, we could encounter serious difficulties in the effective management of our business. While each of these individuals has a service agreement, these agreements cannot ensure their continued employment.

We generate a significant portion of our revenue outside the United Kingdom and are therefore subject to additional risks associated with the extent of our international operations.

        Our sales outside the United Kingdom, consisting primarily of sales in Canada and the United States, constituted 22% of our 2000 revenues, 39% of our revenues for each of 2001 and 2002 and 78% of our revenues for the first half of 2003. We anticipate that our sales outside the United Kingdom will increase significantly as a result of sales under our supply agreement with Nortel Networks Limited.

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Because we sell a significant portion of our products outside the United Kingdom, we are subject to additional risks related to operating in foreign countries. These risks include:

        Any of these risks could materially adversely affect our business, financial condition and results of operations.

Our business is subject to currency fluctuations that may adversely affect our operating results.

        Due to our multinational operations, our business is subject to fluctuations based upon changes in the exchange rates between the currencies in which we collect revenues and pay expenses. In particular, we expect that a substantial portion of our revenues will be denominated in U.S. dollars, while the majority of our expenses will continue to be denominated in pounds sterling. Fluctuations in the exchange rate between these two currencies and, to a lesser extent, other currencies in which we collect revenue and pay expenses, could affect our operating results. In addition, our consolidated financial statements are prepared in pounds sterling and translated into U.S. dollars for U.S. reporting purposes. As a result, even when foreign currency expenses substantially offset revenues in the same currency, our net income may be diminished or our net loss increased, when reported in U.S. dollars in our financial statements. We may at times engage in currency hedging transactions in an effort to cover any exposure to such fluctuations, and we may be required to convert currencies to meet our obligations. Under certain circumstances, hedging transactions can have an adverse effect on our financial condition.

Our business involves the use of hazardous materials, and environmental laws and regulations may expose us to liability and increase our costs.

        We historically have handled small amounts of hazardous materials as part of our manufacturing activities and now handle more and different such hazardous materials as a result of the manufacturing processes related to the acquired Nortel Networks businesses and the product lines we acquired from MOC. Consequently, our operations are subject to environmental laws and regulations governing, among other things, the use and handling of hazardous substances and waste disposal. We may be required to incur environmental costs to comply with current or future environmental laws. As with other companies engaged in manufacturing activities that involve hazardous materials, a risk of environmental liability is inherent in our manufacturing activities, as is the risk that our facilities will be shut down in the event of a release of hazardous waste. The costs associated with environmental compliance or remediation efforts or other environmental liabilities could adversely affect our business.

We may in the future be considered a passive foreign investment company.

        The U.S. Internal Revenue Code of 1986, as amended, contains special rules relating to passive foreign investment companies ("PFICs"). A U.S. holder who owns stock in a PFIC generally is subject to adverse tax consequences under these rules. These rules do not apply to non-U.S. holders. A company is treated as a PFIC if at least 75% of the company's gross income for a taxable year consists of "passive income," defined generally as income from passive investments, as opposed to operating income. A company is also treated as a PFIC if the average percentage of the value of its assets,

14



including cash balances, that produce or are held for the production of passive income is at least 50%. The application of the gross income test in our particular circumstances is uncertain, as the calculation is complex when a company's gross margin is negative and our calculation is based on a US Internal Revenue Service private letter ruling which, although issued in similar circumstances, was issued to another taxpayer and would not necessarily be applied by the IRS to us in any audit or review. This could result in our classification as a PFIC in the future, even in a year in which we have substantial gross revenues from product sales. In addition, the proportion of our cash balances compared with our total assets may in the future result in our being a PFIC. There can be no assurance that we will in future years have sufficient revenues from product sales or sufficient non-passive assets to avoid becoming a PFIC.

        If we were classified as a PFIC, unless a U.S. holder made a timely specific election, a special tax regime would apply to any "excess distribution", which would be your share of distributions in any year that are greater than 125% of the average annual distributions received by you in the three preceding years or your holding period, if shorter; and any gain realized on the sale or other disposition of the ordinary shares or ADSs. Under this regime, any excess distribution and realized gain would be treated as ordinary income and would be subject to tax as if the excess distribution or gain had been realized ratably over your holding period for the ordinary shares or ADSs. You will generally be required to pay taxes on the amount allocated to a year at the highest marginal tax rate and pay interest on the prior year's taxes. You may be able to ameliorate the tax consequences somewhat by making a mark-to-market election or QEF election, that is, an election to have us treated as a qualified electing fund for U.S. federal income tax purposes. You should consult your tax advisor of the consequences of our classification as a PFIC.

Your ability to bring an action against us may be limited under English law.

        We are a public limited company incorporated under the laws of England and Wales. The rights of holders of ordinary shares and, therefore, many of the rights of ADS holders, are governed by English law and by our memorandum and articles of association. These rights differ from the rights of shareholders in typical U.S. corporations. In particular, English law significantly limits the circumstances under which shareholders of English companies may bring derivative actions. Under English law generally, only we can be the proper plaintiff in proceedings in respect of wrongful acts committed against us. In addition, because several of our directors and a majority of our executive officers, as well as the selling shareholders and experts named in this prospectus, are residents of countries other than the United States, it may not be possible for you to effect service of process upon them in the United States. It may also be difficult for you to prevail in a claim against us, our officers and directors or the selling shareholders under, or to enforce liabilities based upon, U.S. securities laws. See "Enforcement of Civil Liabilities."

The future sale of substantial amounts of our ordinary shares or ADSs could adversely affect our share price.

        In connection with our acquisition of the acquired Nortel Networks businesses, we issued to Nortel Networks 61,000,000 ordinary shares, which represents approximately 29.8% of our outstanding shares as of May 1, 2003. We also issued to Nortel Networks warrants over 9,000,000 ordinary shares. These warrants are immediately exercisable but may not be exercised to the extent that doing so would result in Nortel Networks owning 30% or more of our outstanding ordinary shares at the time of exercise. Certain other shareholders or groups of shareholders also hold significant percentages of our shares. For example, our directors collectively beneficially hold approximately 15.8%, and Marconi Optical Components Limited holds approximately 6.3% of our outstanding ordinary shares as of March 1, 2003. In addition, Nortel Networks and certain shareholders have the right to require us to register their ordinary shares in the United States. In particular, we have agreed to file a registration statement with

15



the U.S. Securities and Exchange Commission to register the ordinary shares held by Nortel Networks or its affiliates at the time of registration (and any ADSs arising on conversion thereof) and we have further agreed to bear the cost of registration (excluding selling commissions and any fees and expenses related to converting ordinary shares into ADSs). Sales by Nortel Networks or other shareholders of substantial amounts of shares in the public or private market could adversely affect the market price of our ordinary shares or ADSs by increasing the supply of shares available for sale compared to the demand in the private and public capital markets to buy our ordinary shares or ADSs. These sales may also make it more difficult for us to sell equity securities in the future at a time and price that we deem appropriate.

        Nortel Networks has agreed that it will not sell or otherwise dispose of or charge, directly or indirectly, any shares for a period of six months after completion of the acquisition on November 8, 2002 and that it will not sell or otherwise dispose of or charge, directly or indirectly, more than 15,000,000 shares per quarter during the period of one year thereafter. However, we may, in our sole discretion, and at any time, consent to the sale of shares by Nortel Networks. We have also agreed that, as exceptions to the above-mentioned restrictions, Nortel Networks is entitled to make: (i) inter-group transfers; (ii) sales in privately negotiated transactions not involving a public offering, provided that such sales are not to certain of our competitors; and/or (iii) pledges for the benefit of financing providers to Nortel Networks or its affiliates, provided that in each case the transferee agrees to be bound by the above-mentioned restrictions. In addition, the above-mentioned restrictions shall not prevent or restrict Nortel Networks from: (i) accepting an offer; (ii) giving an irrevocable undertaking in relation to an offer; or (iii) selling any shares during an offer period, in each case where the offer is for our entire issued share capital.

Failure to satisfy the minimum bid price requirements of the NASDAQ National Market may result in delisting.

        Our ADSs are listed on the NASDAQ National Market. To continue to be listed on that market, we must satisfy certain continued listing requirements, including a minimum bid price per ADS of $1.00. Failure to maintain the minimum bid price or any of these other criteria may result in the delisting of our ADSs from the NASDAQ National Market. If the bid price per ADS falls below $1.00 for certain periods of time, unless at that time one of a range of alternatives, including a change in the ratio of ADSs to ordinary shares, is successfully implemented, we may cease being listed on the NASDAQ National Market. If we are no longer eligible for listing on the NASDAQ National Market, we may seek to be listed on the NASDAQ Smallcap Market if we satisfy the continued listing requirements of that market. In the event that we cannot satisfy those listing requirements, trading, if any, in the ADSs would be conducted on the over-the-counter bulletin board, or OTCBB, or, possibly, on an unregulated trading facility referred to as the "pink sheets". If we are no longer listed on the NASDAQ National Market, investors may find it more difficult to sell their ADSs because smaller quantities of the ADSs would likely be bought and sold, there could be a delay in executing the transactions and there may be a reduction in the level of analyst coverage.

RISKS ASSOCIATED WITH THE TELECOMMUNICATIONS AND OPTICAL COMPONENTS INDUSTRY

The markets in which we operate are highly competitive, which could result in lost sales and lower revenues.

        The market for fibre-optic components is highly competitive and such competition could result in our existing customers moving their orders to competitors. Certain of our competitors may be able more quickly and effectively to:

16


        In addition, market leaders in industries such as semiconductor and data communications, who may have significantly more resources than we do, may in the future enter our market with competing products. All of these risks may be increased if the market were to consolidate through mergers or business combinations between competitors.

        There can be no assurance that we will be able to compete successfully with our competitors or that aggressive competition in the market will not result in lower prices for our products or decreased gross profit margins. Any such development would have a material adverse effect on our business, financial condition and results of operations.

Our success will depend on our ability to anticipate and respond to evolving technologies and customer requirements.

        The market for telecommunications equipment is characterized by substantial capital investment and diverse and evolving technologies, such as fibre-optic, cable, wireless and satellite technologies. Our ability to anticipate changes in technology, industry standards, customer requirements and product offerings and to develop and introduce new and enhanced products will be significant factors in our ability to succeed. We expect that new technologies will continue to emerge as competition in the telecommunications industry increases and the need for higher and more cost efficient bandwidth expands. The introduction of new products embodying new technologies or the emergence of new industry standards could render our existing products uncompetitive from a pricing standpoint, obsolete or unmarketable.

Our business has suffered and may continue to suffer from periodic downturns.

        The telecommunications industry generally, and the fibre-optic components market in particular, has suffered from a period of over investment followed by a sharp decline in investment. As a result, customer demand has decreased and our sales declined significantly in the past year. There can be no assurance that the market will stabilise or improve in the near term or that the growth rates experienced in the 1999 and 2000 financial years will be attainable again in the coming years. A prolonged downturn in the industry could result in further substantially reduced volumes of sales of our products, severely adversely affecting our results of operations.

Factors other than quarterly results could cause our share price to be volatile or decline.

        We are grouped with the major telecommunications companies on both the London Stock Exchange and the NASDAQ National Market. The market prices of our ordinary shares and ADSs have been, and are likely to continue to be, highly volatile due to causes other than publication of historical quarterly results, such as:


        Over the past year, the NASDAQ National Market, the London Stock Exchange, our ordinary shares, our ADSs and the shares of our customers and competitors, in particular, have experienced

17


substantial price and volume fluctuations, in many cases without any direct relationship to the affected companies' operating performance. Nevertheless, the market prices of the shares of companies in the optical components, modules and systems industries continue to trade at high multiples of earnings. An outgrowth of these multiples and market volatility is the significant vulnerability of our share price and the share prices of our customers and competitors to any actual or perceived fluctuation in the strength of the markets we serve, no matter how minor in actual or perceived consequence. As a result, these multiples, and hence market prices, may not be sustainable. These broad market and industry factors have caused and may in the future cause the market price of our ordinary shares or ADSs to decline, regardless of our actual operating performance or the operating performance of our customers.

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CAPITALIZATION

        The following table sets forth our cash, short-term debt and capitalization as of August 24, 2003 under UK GAAP. There have been no significant changes to the amounts presented below since August 24, 2003.

 
  August 24,
2003

 
  £000

Cash   55,767
   
Short-term debt—secured   30
   
Long term debt    
  $20 million unsecured   12,709
  $30 million secured   19,064
  CHF1 million secured   250
   
Total long-term debt   32,023
Equity shareholders' funds   127,030
   
Total capitalization   159,053
   

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USE OF PROCEEDS

        We are not selling any shares pursuant to this prospectus and will not receive any proceeds from the sale of the shares by the selling stockholders. See "Plan of Distribution" on page 27.

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THE OFFERING

        This prospectus is part of a registration statement that we have filed with the U.S. Securities and Exchange Commission, or the SEC, to register a total of 61,000,000 of our ordinary shares previously issued by us to subsidiaries of Nortel Networks Corporation, or the selling stockholders, in connection with our acquisition of the optical amplifier and optical transmitter and receiver businesses of Nortel Networks. The registration statement permits the selling stockholders to use a "shelf" registration or "continuing offering" process. Under this process, the selling stockholders may from time to time sell the ordinary shares, 1/3p par value per share, or ADSs representing ordinary shares, in one or more offerings. The selling stockholders will act independently of us in making decisions with respect to the timing, manner and size of each sale. Such sales may be made on one or more exchanges or in the over-the-counter market or otherwise, at prices and under terms then prevailing or at prices related to the then current market price of the ordinary shares or ADSs or in negotiated transactions. The rights of the ordinary shares and ADSs are described in our registration statements previously filed with the SEC and incorporated herein by reference.

        The ordinary shares being registered hereunder are subject to certain prohibitions. Specifically, until May 8, 2004, during any of the four consecutive three-month periods beginning May 8, 2003, Nortel Networks Corporation may not (and will cause its subsidiaries not to):

        The prohibitions will not apply to transactions between or among Nortel Networks Corporation and its wholly-owned subsidiaries, sales in privately negotiated transactions not involving a public offering (other than sales to certain competitive entities) or pledges of the shares for the benefit of individuals or entities providing financing to Nortel Networks Corporation or its subsidiaries that participated in the sale of the Nortel Networks businesses, provided that in each case the transferee agrees to be bound by the prohibitions.

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        The following table sets forth information regarding the high and low market prices of our ordinary shares and ADSs for the most recent six months:

 
  Per ordinary share
  Per ADS
 
  High
  Low
  High
  Low
 
  (£)

  (£)

  ($)

  ($)

Month Ended                
February 28, 2003   0.85   0.75   1.29   1.19
March 31, 2003   0.82   0.65   1.26   1.01
April 30, 2003   0.78   0.66   1.17   1.03
May 31, 2003   0.95   0.79   1.83   1.47
June 30, 2003   0.88   0.83   1.46   1.35
July 31, 2003   0.81   0.77   1.37   1.26

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SELLING STOCKHOLDERS

        The following table sets forth, to our knowledge, certain information about the selling stockholders as of June 29, 2003. Beneficial ownership is determined in accordance with the rules of the SEC, and includes voting or investment power with respect to the shares. Nortel Networks has sole voting and investment power with respect to the ordinary shares listed below. The inclusion of any shares in this table does not constitute an admission of beneficial ownership for the person named below. The percentages in the table below are calculated based on 204,953,782 ordinary shares outstanding as of June 29, 2003.

 
  Ordinary Shares Beneficially Owned
Prior to Offering

   
  Ordinary Shares to be
Beneficially Owned After Offering(3)

Name and Address of Selling Stockholder(1)

  Ordinary Shares
Being Offered

  Number
  Percentage
  Number
  Percentage
Nortel Networks Optical Components
    Limited(2)
  37,675,352   18.3 % 37,210,585   464,767   *
  Maidenhead Office Park
Westacott Way
Maidenhead
Berkshire SL6 3QH
United Kingdom
                   

Nortel Networks Limited

 

23,789,415

 

11.6

%

23,789,415

 


 

  2351 Boulevard Alfred-Nobel
St. Laurent
Quebec H4S 2A9
Canada
                   

*
Less than one percent.

(1)
Selling stockholders may also include certain transferees, successors and assigns and heirs and personal representatives of the selling stockholders named in this table.

(2)
These figures include 464,767 ordinary shares underlying warrants to purchase a total of 9,000,000 shares issued to Nortel Networks Optical Components Limited in connection with our acquisition from Nortel Networks. The warrants are immediately exercisable but the terms of the warrants prohibit their exercise to the extent such exercise would result in Nortel Networks, and persons acting in concert with Nortel Networks, holding 30% or more of our then-issued and outstanding ordinary shares. The 464,767 ordinary shares underlying the warrants represent the currently exercisable portion of the warrants in accordance with these restrictions. While these shares are beneficially owned by Nortel Networks Optical Components Limited, they are not included in the shares registered under the registration statement of which this prospectus is a part or in the shares offered under this prospectus.

(3)
We do not know when or in what amounts a selling stockholder may offer shares for sale. The selling stockholders might not sell any or all of the shares offered by this prospectus. Because the selling stockholders may offer all or some of the shares pursuant to this offering, and because there are currently no agreements, arrangements or understandings with respect to the sale of any of the shares, we cannot estimate the number of the shares that will be held by the selling stockholders after completion of the offering. However, for purposes of this table, we have

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        The selling stockholders are direct or indirect subsidiaries of Nortel Networks Corporation, and received their ordinary shares as part of the consideration for our acquisition from Nortel Networks in November 2002. In addition to the issuance of 61,000,000 ordinary shares, the consideration for the acquisition consisted of warrants for 9,000,000 ordinary shares, secured loan notes in an aggregate principal amount of $30,000,000 and unsecured loan notes in an aggregate principal amount of $20,000,000. We also paid Nortel Networks $10,000,000 less certain adjustments, for a net amount of $9,200,000 in connection with the transaction. We agreed, pursuant to the terms of a Registration Rights Agreement, to register the 61,000,000 ordinary shares issued to the selling stockholders.

        The warrants are exercisable on one or more occasions for a period of ten years commencing November 9, 2002. Nortel Networks may not exercise the warrants to the extent that, following such exercise, Nortel Networks and persons acting in concert with Nortel Networks would hold 30% or more of our outstanding ordinary shares. The exercise price of the warrants is [_[SUPER," 1"]_]/3p per ordinary share.

        The unsecured loan notes carry an interest rate of 4% per year and are repayable in full on the fifth anniversary of their issuance (subject to provisions for early repayment). The repayment of the secured loan notes is secured by all our capital equipment and all the assets of the optical amplifier and optical transmitter and receiver businesses we acquired in the acquisition. These notes initially carried an interest rate of 7% per year, which will increase by 0.25% per quarter beginning February 8, 2003. The secured loan notes are repayable in full on the third anniversary of their issuance unless required to be repaid earlier in connection with an equity or equity-linked financing by us.

        In connection with the acquisition, we entered into a Supply Agreement with Nortel Networks Limited, a wholly owned subsidiary of Nortel Networks Corporation, pursuant to which Nortel Networks Limited will be required to purchase from us a minimum of $120,000,000 of optical products and related services over a period of six quarters from November 8, 2002. If the purchases in each quarter of the six quarter term are within 15% of $20,000,000, Nortel Networks Limited is permitted to roll over the shortfall to a succeeding quarter. In addition, over the three years following November 8, 2002, Nortel Networks Limited has agreed to purchase from us agreed percentages on a product-by-product basis of its total requirements for optical components products that were previously supplied to Nortel Networks by its optical amplifier and optical transmitter and receiver businesses that we acquired, subject to our meeting certain customary performance criteria including quality and delivery. However, if Nortel Networks' financial condition deteriorates because the continued severe slowdown in the telecommunications industry or due to changes in its own financial position, Nortel Networks Limited may be unable to perform, in full or in part, its obligations under the Supply Agreement. Under certain circumstances, including a bankruptcy proceeding initiated by or against Nortel Networks and/or Nortel Networks Limited, amounts owing to us by Nortel Networks Limited might not be recoverable and the Supply Agreement might no longer be enforceable against Nortel Networks Limited. For the six months ended June 30, 2003, Nortel Networks reported a net loss of $150 million. Nortel Networks has previously announced workforce reductions and facilities closures. If Nortel Networks Limited is unable to meet its purchasing obligations under the Supply Agreement, or ceases to purchase a substantial amount of products from us after its expiration, our results of operations and business prospects would be materially adversely affected.

        We also entered into a Relationship Deed with Nortel Networks Corporation which regulates our ongoing relationship with Nortel Networks Corporation. Among other things, the agreement provides that (i) for as long as Nortel Networks or its related parties hold, individually or collectively, at least 5% of our outstanding ordinary shares, Nortel Networks will abstain, and will cause the related parties

24



to abstain, from exercising its (or their) right to vote in respect of the ordinary shares; (ii) to ensure that we are capable at all times of carrying on our business independently from Nortel Networks, all transactions, agreements or arrangements entered into between Nortel Networks and its related parties and us are, and will be made, at arm's length and on a normal commercial basis; and (iii) neither Nortel Networks nor any of its related parties will exercise its (or their) voting rights to make an amendment to our Articles of Association that would be contrary to the terms of the Relationship Deed. Nortel Networks shall only be entitled to vote on any proposed shareholder resolution that would have the effect, if passed, of varying or suspending any rights attaching to Nortel Networks' ordinary shares or that would result in Nortel Networks' rights becoming different from the rights of other shareholders.

25



MATERIAL CHANGES

        In February 2003, we announced our decision to significantly downsize the manufacturing and research development activities associated with our ASOC product line and downsize our Abingdon facility in order to refocus our resources on those product lines that are producing revenue and are expected to produce revenue in the short and medium term. These include the product lines we acquired in connection with the acquisitions from MOC and Nortel Networks. We anticipate this decision will involve a reduction in our number of employees by approximately 200 people, triggering associated severance and related costs of between £3 million and £4 million. While we continue to believe that there is value and future revenue opportunity for our ASOC platform, current market conditions have required us to focus on revenue-generating activities and it is not clear we will in the future be able to capitalize on the opportunities we believe are presented by our ASOC platform.

        In April 2003, we announced the expected closure of the former Nortel Networks semiconductor fabrication facility located in Ottawa, Canada and the transfer of certain equipment and future production to a similar facility in Caswell, England. We expect this relocation will be completed by the end of the fourth quarter of 2003, and will involve severance and retention costs for approximately 200 people, the restoration of the Ottawa site and the write off of remaining book value of the equipment and leasehold improvements not being transferred to Caswell. While we anticipate that associated costs will be between £12 million and £15 million, the precise timing and the amounts of these charges cannot yet be definitively assessed. The restructuring process is continuing on schedule.

        In July 2003, we acquired substantially all of the assets of Cierra Photonics, Inc., a company based in Santa Rosa, California and a manufacturer of thin film filters that are incorporated into optical components to manage variations in wavelength, in exchange for 3,071,484 of our ordinary shares.

        On July 3, 2003, Nortel Networks disposed of approximately 30,000,000 of our ordinary shares in a private transaction. There can be no assurance that Nortel Networks may not effect such transactions in the future, or that its transferees may not thereafter resell significant numbers of shares in privately effected transactions or otherwise.

        On July 29, 2003, we announced further cost reduction measures, which, combined with those described above, are intended to permit us to achieve case break even at revenue levels of approximately £30 million ($48 million) to £35 million ($56 million) per quarter by the end of 2003. These measures include a reduction in the level of our research and development expenditures and the discontinuation of investment in our ASOC line, which will result in the disposal of our silicon wafer fabrication facility in Abingdon, U.K. In addition, we will take further actions to reduce manufacturing overheads and reduce sales, general and administrative spending. We estimate that these actions will result in exceptional charges under UK GAAP of approximately £14 million ($22.5 million) to £16 million ($25.8 million) in the quarter ended September 29, 2003.

26



PLAN OF DISTRIBUTION

        The selling stockholders have not advised us of any specific plans for the distribution of the shares covered by this prospectus. The term "selling stockholders" includes donees, pledgees, transferees or other successors-in-interest selling shares received after the date of this prospectus from a selling stockholder as a gift, pledge, partnership distribution or other non-sale related transfer. The selling stockholders may sell their shares by one or more, or a combination, of the following methods:

        In addition, any shares that qualify for sale pursuant to Rule 144 under the Securities Act of 1933, as amended, may be sold under Rule 144 rather than pursuant to this prospectus.

        To the extent required, this prospectus may be amended or supplemented from time to time to describe a specific plan of distribution.

        In connection with distributions of the shares or otherwise, the selling stockholders may enter into hedging transactions with broker-dealers or other financial institutions. In connection with such transactions, broker-dealers or other financial institutions may engage in short sales of the ordinary shares in the course of hedging the positions they assume with selling stockholders. The selling stockholders may also sell the ordinary shares short and redeliver the shares to close out such short positions. The selling stockholders may also enter into option or other transactions with broker-dealers or other financial institutions which require the delivery to such broker-dealer or other financial institution of shares offered by this prospectus, which shares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction). The selling stockholders may also pledge shares to a broker-dealer or other financial institution, and, upon a default, such broker-dealer or other financial institution may effect sales of the pledged shares pursuant to this prospectus (as supplemented or amended to reflect such transaction).

        In effecting sales, broker-dealers or agents engaged by the selling stockholders may arrange for other broker-dealers to participate. Broker-dealers or agents may receive commissions, discounts or concessions from the selling stockholders in amounts to be negotiated immediately prior to the sale.

        In offering the shares covered by this prospectus, the selling stockholders and any broker-dealers who execute sales for the selling stockholders may be deemed to be "underwriters" within the meaning of the Securities Act in connection with such sales. Any profits realized by the selling stockholders and the compensation of any broker-dealer may be deemed to be underwriting discounts and commissions.

        The selling stockholders and other persons participating in the sale or distribution of the shares will be subject to applicable provisions of the Exchange Act and the rules and regulations promulgated under the Exchange Act, including Regulation M. This regulation may limit the timing of purchases and sales of any of the shares by the selling stockholders and any other person. The anti-manipulation rules under the Exchange Act may apply to sales of shares in the market and to the activities of the selling shareholders and its affiliates. Furthermore, Regulation M may restrict the ability of any person engaged in the distribution of the shares to engage in market-making activities with respect to the

27



particular shares being distributed for a period of up to five business days before the distribution. These restrictions may affect the marketability of the shares and the ability of any person or entity to engage in market-making activities with respect to the shares.

        In order to comply with the securities laws of certain states, if applicable, the shares must be sold in such jurisdictions only through registered or licensed brokers or dealers. In addition, in certain states the shares may not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with.

        At the time a particular offer of shares is made, if required, a prospectus supplement will be distributed that will set forth the number of shares being offered and the terms of the offering, including the name of any underwriter, dealer or agent, the purchase price paid by any underwriter, any discount, commission and other item constituting compensation, any discount, commission or concession allowed or reallowed or paid to any dealer, and the proposed selling price to the public.

        We have agreed to indemnify the selling stockholders, and the selling stockholders have agreed to indemnify us, against certain liabilities, including certain liabilities under the Securities Act.

        We have agreed with the selling stockholders to keep the Registration Statement, which includes this prospectus, effective until November 8, 2004.

28



EXPENSES OF ISSUANCE AND DISTRIBUTION

        The following table sets forth the various expenses to be incurred in connection with the sale and distribution of the securities being registered hereby, all of which will be borne by Bookham Technology plc (except any underwriting discounts and commissions and expenses incurred by the selling stockholders for brokerage, accounting, tax or legal services or any other expenses incurred by the selling stockholders in disposing of the shares). All amounts shown are estimates except the Securities and Exchange Commission registration fee.

Filing Fee—Securities and Exchange Commission   $ 5,527
Legal fees and expenses   $ 100,000
Accounting fees and expenses   $ 300,000
Miscellaneous expenses   $ 4,473
   
Total Expenses   $ 410,000
   

29



SHARE CAPITAL

        Our authorized share capital was 300,000,000 ordinary shares, 1/3p par value per share, as of December 31, 2002 and June 29, 2003. Our issued share capital was 130,160,413, 204,950,872 and 204,953,782 ordinary shares as of January 1, 2002, December 31, 2002 and June 29, 2003, respectively. All of our issued shares were on those dates, and are currently, fully paid. Neither we nor any of our subsidiaries hold shares of Bookham Technology plc. There were 31,010,440 and 28,465,859 ordinary shares issuable upon the exercise of outstanding options and warrants as of December 31, 2002 and June 29, 2003, respectively. The following is a list of outstanding warrants to purchase our ordinary shares as of December 31, 2002 and June 29, 2003:

Number of Warrants

  Exercise Price
  Expiration Date
122,821   $ 1.9333   April 18, 2004
8,441   $ 1.9333   April 18, 2004
9,000,000     1/3p   November 8, 2012

        All of our outstanding options as of December 31, 2002 and June 29, 2003 have been granted to our employees and directors under our equity incentive plans. As of December 31, 2002 and June 29, 2003, the exercise price of these options ranged from £0.73 to £36.05. All options granted under our equity incentive plans have a duration of 10 years unless earlier terminated in accordance with the applicable plan or option agreement. The warrants for 9,000,000 shares were issued to Nortel Networks in connection with the acquisition of the acquired Nortel Networks businesses.

2000

        On February 23, 2000, our shareholders approved an increase in our authorized share capital by approving the creation of 200,000 Series A Convertible Preference Shares of $100 nominal value each. On February 25, 2000, the directors issued 200,000 Preference Shares for an aggregate consideration of $20,000,000. In April 2000, all of the issued Preference Shares were automatically converted to 1,263,423 ordinary shares at the conversion rate of $15.83 per ordinary share. All of the unissued Preference Shares were also cancelled at that time and the authorized share capital was reduced accordingly.

        On March 13, 2000, our shareholders approved an increase in our authorized share capital by approving the creation of an additional 6,000,000 ordinary shares of 2p nominal value each. On the same date, our shareholders approved a subdivision of each authorized and issued 2p ordinary share into six ordinary shares of 1/3p each. On April 11, 2000, we issued 21,900,000 ordinary shares of 1/3p each for a total cash consideration of £200,060,000 net of issuance costs. On September 19, 2000, we issued 3,064,548 ordinary shares of 1/3p each for a total cash consideration of £97,332,000 net of issuance costs. During 2000, we also issued 2,413,145 of ordinary shares of 1/3 pence each under our 1995 and 1998 Employee Share Option Schemes, including 47,274 shares to consultants upon the exercise of options. During 2000, we issued 1,410,972 shares to warrant holders upon the exercise of warrants. On June 5, 2000, we issued 63,171 shares to Goldman Sachs International as payment of $1,000,000 of fees owed by us in connection with financial advisory services performed by Goldman Sachs International.

        With the exception of shares issued to warrant holders, all shares issued during the period were issued at fair market prices.

2001

        On April 26, 2001, our shareholders approved an increase in our authorized share capital approving the creation of an additional 39,600,000 ordinary shares.

30



        During 2001, we issued 1,558,136 ordinary shares under our 1995 and 1998 Employee Share Option Schemes. On January 25, 2001, we agreed to issue, at a further date, up to 2,108,957 ordinary shares to the shareholders of Measurement Microsystems A-Z Inc., or MM, as consideration for the acquisition of the entire share capital of MM. The issue of 702,986 shares was contingent upon the achievement of performance milestones by MM employees. At December 31, 2001, 1,282,304 ordinary shares had been issued under the agreement and 826,653 remained to be issued.

2002

        During 2002, we issued 320,657 ordinary shares under the 1995 and 1998 Employee Share Option Schemes and 1,559 ordinary shares under our 2001 Approved Share Save Scheme and 577,243 ordinary shares to the shareholders of MM. Following the determination that 195,845 ordinary shares subject to performance milestones will not be issued, a total of 53,565 remain to be issued under the agreement with the MM shareholders dated January 25, 2001. On February 1, 2002, we issued 12,891,000 ordinary shares of 1/3 pence each to Marconi plc in consideration for the acquisition of the business and assets of Marconi Optical Components Limited. On November 5, 2002, our shareholders approved an increase in our authorized share capital by approving the creation of an additional 99,900,000 ordinary shares. On November 11, 2002, we issued 61,000,000 ordinary shares of 1/3 pence each to Nortel Networks Corporation in consideration for the acquisition of the optical amplifier and optical transmitter and receiver businesses.

        Our board of directors approved the issuance to the selling stockholders of the ordinary shares being registered hereunder on November 5, 2002.

31



DIVIDENDS

        We have never paid dividends on our share capital. We currently intend to retain future earnings, if any, to fund the development and growth of our business and do not anticipate paying cash dividends. Any payment of future dividends will be at the discretion of our Board of Directors after taking into account various factors, including our financing condition, operating results, current and anticipated cash needs and plans for expansion.

        Under English law, any payment of dividends would be subject to the Companies Act 1985, which requires that all dividends be approved by our Board of Directors and, in some cases, our shareholders. Moreover, under English law, we may pay dividends on our shares only out of profits available for distribution determined in accordance with the Companies Act and accounting principles generally accepted in the United Kingdom, which differ in some respects from United States generally accepted accounting principles. In the event that dividends are paid in the future, holders of our ADSs will be entitled to receive payments in U.S. dollars in respect of dividends on the underlying ordinary shares in accordance with the Deposit Agreement dated April 18, 2000, between us and The Bank of New York, as depositary.

32



EXPERTS

        Ernst & Young LLP, independent auditors, have audited our consolidated financial statements as of and for the years ended December 31, 2002 and 2001 included in our annual report on Form 20-F/A for the year ended December 31, 2002, as set forth in their report, which is incorporated by reference in this prospectus and registration statement. These financial statements are incorporated by reference in reliance on Ernst & Young LLP's report, given on their authority as experts in accounting and auditing.

        Ernst & Young LLP, independent auditors, have audited the combined financial statements of the Optical Amplifier and Optical Transmitter and Receiver Businesses of Nortel Networks Corporation for the years ended December 31, 2001, 2000, and 1999 as set forth in their report. We have included these financial statements in the prospectus and registration statement in reliance on Ernst & Young LLP's report, given on their authority as experts in accounting and auditing.

        The financial statements for the year ended December 31, 2000 incorporated in this registration statement by reference to our annual report on Form 20-F/A for the year ended December 31, 2002 have been so incorporated in reliance upon the report of PricewaterhouseCoopers, independent accountants, given on the authority of said firm as experts in auditing and accounting.


LEGAL MATTERS

        The validity of the shares offered hereby has been passed upon by Hale and Dorr.


WHERE YOU CAN FIND MORE INFORMATION

        We file reports and other documents with the SEC. You may read and copy any document we file at the SEC's public reference room at Judiciary Plaza Building, 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549. You should call 1-800-SEC-0330 for more information on the operation of the public reference room. The SEC maintains an Internet site at http://www.sec.gov that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC.

        This prospectus is part of a registration statement that we filed with the SEC. The registration statement contains more information than this prospectus regarding us and our ordinary shares, including certain exhibits. You can obtain a copy of the registration statement from the SEC at the address listed above or from the SEC's Internet site.


INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

        This prospectus "incorporates" information set forth in documents that we file with the SEC. This means that we can disclose important information to you by referring to other documents that contain that information. The information incorporated by reference is considered to be part of this prospectus. Information contained in this prospectus and information that we file with the SEC in the future and incorporate by reference in this prospectus automatically updates and supersedes previously filed information. We incorporate by reference the documents and reports listed below as well as any subsequent annual reports on Form 20-F, prior to the sale of all the shares covered by this prospectus. Any subsequent report on Form 6-K that we submit to the SEC will only be incorporated by reference into this document if we state in such Form 6-K that it is being incorporated by reference into this document.

(1)
Our Annual Report on Form 20-F for the year ended December 31, 2002, as amended;

(2)
Our report on Form 6-K dated April 30, 2003;

(3)
Our report on Form 6-K dated July 30, 2003; and

33


(4)
The description of our ordinary shares and American Depositary Shares represented by American Depositary Receipts contained in Amendment No. 1 to our Registration Statement on Form F-1, filed on September 19, 2000, including any amendments or reports filed for the purpose of updating that description.

        We will provide a copy of any of these documents to any person, including any beneficial owner, to whom a prospectus is delivered, at no cost, upon oral or written request to:

Bookham Technology plc
90 Milton Park
Abingdon, Oxfordshire OX14 4RY
United Kingdom
Attention: Investor Relations
Telephone: (011) (44) 1235 837 000

34



ENFORCEMENT OF CIVIL LIABILITIES

        We are a public limited company incorporated under the laws of England and Wales. Several of our directors and a majority of our executive officers, as well as the selling stockholders and experts named in this prospectus, are residents of countries other than the United States. All or a substantial portion of their assets and our assets are located outside the United States. As a result, it may not be possible for you:

35



SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION

        This prospectus includes and incorporates forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements, other than statements of historical facts, included or incorporated in this prospectus regarding our strategy, future operations, financial position, future revenues, projected costs, prospects, plans and objectives of management are forward-looking statements. The words "anticipates," "believes," "estimates," "expects," "intends," "may," "plans," "projects," "will," "would" and similar expressions are intended to identify forward-looking statements, although not all forward- looking statements contain these identifying words. We cannot guarantee that we actually will achieve the plans, intentions or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included or incorporated in this prospectus, particularly under the heading "Risk Factors", that we believe could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make. We do not assume any obligation to update any forward-looking statements.

36




INDEX TO FINANCIAL INFORMATION

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED PROFIT AND LOSS ACCOUNT FOR THE YEAR ENDED DECEMBER 31, 2002 OF BOOKHAM TECHNOLOGY PLC   F-2

NOTES TO THE UNAUDITED PRO FORMA CONDENSED CONSOLIDATED PROFIT AND LOSS ACCOUNT

 

F-3

UNAUDITED COMBINED FINANCIAL STATEMENTS FOR THE SIX MONTHS ENDED JUNE 30, 2002 AND JUNE 30, 2001 FOR THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION

 

F-7

NOTES TO THE UNAUDITED COMBINED FINANCIAL STATEMENTS

 

F-10

REPORT OF INDEPENDENT AUDITORS

 

F-13

AUDITED COMBINED FINANCIAL STATEMENTS FOR THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION

 

F-14

NOTES TO COMBINED FINANCIAL STATEMENTS

 

F-17

F-1



BOOKHAM TECHNOLOGY PLC

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED PROFIT AND LOSS ACCOUNT

For the year ended December 31, 2002

 
  Historical
   
   
   
 
 
   
  Optical
Amplifier
and Optical
Transmitter
and Receiver
Businesses
(Note 1)

   
   
   
 
 
  Bookham
Technology
Plc
(Note 1)

  Pro forma
 
 
  Adjustments
  Notes
  Consolidated
 
 
  £000,000

  £000,000

  £000,000

   
  £000,000

 
Group Turnover   34.6   64.8         99.4  
Cost of sales   74.2   129.0   (15.7 ) 3(a ) 187.5  
   
 
 
     
 
Gross loss   (39.6 ) (64.2 ) 15.7       (88.1 )
Administrative expenses:                      
  Research and development   39.7   20.1         59.8  
  Selling, general and administrative expenses   21.1   132.1   4.5   3(a ) 157.7  
  Other   6.4           6.4  
    67.2   152.2   4.5       223.9  
Other operating income   0.2           0.2  
   
 
 
     
 
Operating loss:                      
  Operating loss before operating exceptional items   (70.0 ) (56.8 ) 11.2       (115.6 )
  Operating exceptional items (note 2)   (36.6 ) (159.6 )       (196.2 )
                       
  Continuing operations   (106.5 ) (216.4 ) 11.2       (311.7 )
  Discontinued operations   (0.1 )         (0.1 )
Group operating loss   (106.6 ) (216.4 ) 11.2       (311.8 )
Net Interest income/(expense)   5.3     (1.1 ) 3(b ) 4.2  
   
 
 
     
 
Loss on ordinary activities before tax   (101.3 ) (216.4 ) 10.1       (307.6 )
Tax on loss ordinary activities before tax     13.9   (13.9 ) 3(c )  
   
 
 
     
 
Loss on ordinary activities after tax(1)   (101.3 ) (202.5 ) (3.8 )     (307.6 )
   
 
 
     
 
Net loss per ordinary share and ADS (basic and diluted)   £(0.67 )             £(1.51 )
Weighted average number of shares   150,996,196     52,788,461   3(d ) 203,784,657  

(1)
Pro forma loss on ordinary activities after tax adjusted for the effects of the significant differences between UK GAAP and US GAAP is set out in Note 4 of Notes to the Unaudited Pro Forma Condensed Profit and Loss Account.

F-2


BOOKHAM TECHNOLOGY PLC

NOTES TO THE UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
PROFIT AND LOSS ACCOUNT

For the year ended December 31, 2002

1      BASIS OF PRESENTATION

        We acquired certain assets and assumed certain liabilities from Nortel Networks Corporation on November 8, 2002, being the Optical Amplifier and Optical Transmitter and Receiver Businesses of Nortel Networks Corporation. The aggregate consideration was £92,092,000 comprising 61,000,000 new Ordinary Shares in Bookham Technology plc, warrants over 9,000,000 new Ordinary Shares, cash of $9,240,000 (£5,848,000), and $50,000,000 (£31,642,000) of loan notes, and the combination has been accounted for as an acquisition.

        The condensed consolidated pro forma profit and loss account for the year ended December 31, 2002 gives effect to the acquisition of the Optical Amplifier and Optical Transmitter and Receiver Businesses of Nortel Networks Corporation as though it had taken place on January 1, 2002.

        The pro forma condensed consolidated profit and loss account has been prepared in accordance with accounting principles generally accepted in the United Kingdom ("UK GAAP") which differs in significant respects from those generally accepted in the United States ("US GAAP"). The principle differences between UK GAAP and US GAAP applicable to Bookham Technology plc are summarised in Note 3 of the Notes to the unaudited pro forma condensed profit and loss account.

        The pro forma condensed consolidated profit and loss account for the year ended December 31, 2002 is based on the audited financial statements of Bookham Technology plc for the year ended December 31, 2002 and the unaudited combined profit and loss account of the Optical Amplifier and Optical Transmitter and Receiver Businesses of Nortel Networks Corporation for the 45 weeks ended November 7, 2002.

        The pro forma profit and loss account is not necessarily indicative of what the results of operations would have been had the acquisition been completed on the date assumed, nor does it purport to project our profit and loss account for any future periods. The pro forma profit and loss account also does not include synergy benefits and potential cost savings arising from the acquisition, if any. The pro forma profit and loss account should be read in conjunction with our audited financial statements incorporated by reference in this prospectus and Registration Statement and audited and unaudited financial statements of the acquired business referred to above included elsewhere in this prospectus and Registration Statement.

2      OPERATING EXCEPTIONAL ITEMS

        Operating exceptional items include £159,600,000 of costs included in the results of the Optical Amplifiers and Optical Transmitter and Receiver Business of Nortel Networks Corporation. These represent £105,000,000 of plant and equipment writedowns, £49,300,000 of inventory writedowns and £5,300,000 of severance and contract settlement costs, all of which were incurred before the date of acquisition. As we recorded the plant and equipment, and inventory at fair value, and did not acquire historic contractual liabilities, these items do not represent ongoing costs of the acquired business.

F-3



3      PRO FORMA CONDENSED CONSOLIDATED PROFIT AND LOSS ACCOUNT

        The pro forma combined condensed statements of operations incorporate the following adjustments:


 
 
  Cost of sales
  Selling,
general and
administrative
expenses

  Total
 
 
 
  £000,000

  £000,000

  £000,000

 
  (i) Increase amortization of intangible assets arising on acquisition to a full year charge     (1.4 ) (1.4 )
 (ii) Increase amortization of goodwill to a full year charge     (3.1 ) (3.1 )
(iii) Reduce depreciation charge to reflect the fair value of tangible assets acquired   15.7     15.7  
     
 
 
 
      15.7   (4.5 ) 11.2  
     
 
 
 

        Details:

F-4


4      DIFFERENCES BETWEEN UK GAAP AND US GAAP

        UK GAAP differs from US GAAP. A summary of the significant differences as they affect Bookham Technology plc is set forth in Note 30 of Notes to the audited financial statements of Bookham Technology plc incorporated by reference in the Registration Statement.

For the year ended December 31, 2002

 
  Historical
   
   
   
 
 
   
  Optical
Amplifier
and Optical
Transmitter
and Receiver
Businesses

   
   
   
 
 
   
  Pro forma
 
 
  Bookham
Technology
Plc

 
 
  Adjustments
  Notes
  Consolidated
 
 
  £000,000

  £000,000

  £000,000

   
  £000,000

 
Loss on ordinary activities after tax under UK GAAP   (101.3 ) (202.5 ) 155.8       (148.0 )
Adjustments:                      
  In-process research and development   (8.8 )   4.6   (i ) (4.2 )
  Increased amortization of intangible
    assets
  (0.3 )   (2.9 ) (ii ) (3.2 )
  Amortization of goodwill   0.4     3.5   (iii ) 3.9  
  Decreased depreciation of tangible
    assets
  0.1     1.1   (iv ) 1.2  
   
 
 
     
 
Net loss as adjusted to accord with
    US GAAP
  (109.9 ) (202.5 ) 162.1       (150.3 )
   
 
 
     
 
Net loss (per US GAAP) per ordinary share and ADS (basic and diluted)   £(0.73 )             £(0.74 )
Weighted average number of shares   150,996,196     52,788,461       203,784,657  

F-5


F-6



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

UNAUDITED COMBINED STATEMENT OF OPERATIONS

For the six months ended June 30,

 
  2002
  2001
 
 
  £000,000

  £000,000

 
Net sales   40.8   224.3  
   
 
 
Costs and expenses:          
  Cost of revenues   115.3   174.4  
  Selling, general and administrative expense   10.6   32.4  
  Research and development expense   13.1   26.3  
  Special charges   110.3   4.1  
   
 
 
    249.3   237.29  
   
 
 
Operating loss   (208.5 ) (12.9 )
Other income   7.3    
   
 
 
Loss before income taxes   (201.2 ) (12.9 )
Income tax benefit   14.3   2.2  
   
 
 
Net loss   (186.9 ) (10.7 )
   
 
 

See accompanying notes.

F-7



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

UNAUDITED COMBINED STATEMENT OF INVESTED CAPITAL

 
  Six months
ended
June 30,
2002

 
 
  £000,000

 
Balance at beginning of period   162.5  
Comprehensive income:      
  Net loss   (186.9 )
  Exchange translation adjustment   5.4  
Other movements in invested capital   14.8  
   
 
Balance at end of period   (4.2 )
   
 

See accompanying notes.

F-8



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

UNAUDITED COMBINED STATEMENTS OF CASH FLOWS

For the six months ended June 30,

 
  2002
  2001
 
 
  £000,000

  £000,000

 
Cash flows from operating activities          
Net loss   (186.9 ) (10.7 )
Adjustments to reconcile net loss to net cash from operating activities:          
  Depreciation   19.5   57.9  
  Impairment of property and equipment   105.0    
  Profit on sale of property and equipment   (5.5 )  
Change in operating assets and liabilities:          
  Accounts receivable   2.3   47.0  
  Inventories   48.3   (38.7 )
  Accounts payable and accrued liabilities   0.4   (12.1 )
  Other operating assets and liabilities   (8.8 ) (20.2 )
   
 
 
Net cash from operating activities   (25.7 ) 23.2  
   
 
 

Cash flows from (used in) investing activities

 

 

 

 

 
Expenditures for plant and equipment     (82.9 )
Proceeds on disposals of property and equipment   5.5    
   
 
 
Net cash from (used in) investing activities   5.5   (82.9 )
   
 
 
Cash flows from (used in) financing activities          
Net movement in invested capital   20.2   59.7  
   
 
 
Net cash from financing activities of continuing operations   20.2   59.7  
   
 
 
Net increase in cash and cash equivalents      
Cash and cash equivalents at beginning of year      
   
 
 
Cash and cash equivalents at end of year      
   
 
 

See accompanying notes.

F-9



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

NOTES TO THE UNAUDITED COMBINED FINANCIAL STATEMENTS

1      ORGANIZATION AND BASIS OF PREPARATION

        The accounting policies used in the preparation of the Condensed Combined Financial Statements, which are unaudited, are the same as those used in the Combined Financial Statements for the year ended December 31, 2001 included elsewhere herein. The tax charge for the six months ended June 30, 2002 is based on the estimated annual effective rate. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the six months ended June 30, 2002 are not indicative of the results that may be expected for the year ended December 31, 2002.

        The Optical Amplifier and Optical Transmitter and Receiver Businesses operate from three principal locations in Paignton (UK), Ottawa (Canada), and Zurich (Switzerland) and also have small facilities in Harlow (UK) and Poughkeepsie, NY (United States).

        The Optical Amplifier and Optical Transmitter and Receiver Businesses have historically operated and been managed as an integral part of the High Performance Optical Component Systems (HPOCS) division of Nortel Networks Corporation. The Optical Amplifier and Optical Transmitter and Receiver Businesses ("The Division") were acquired by Bookham Technology plc on November 8, 2002.

        Nortel Networks Corporation operated the activities of its divisions such that certain assets and liabilities not directly attributable to the Optical Amplifier and Optical Transmitter and Receiver Businesses (notably cash and borrowings) were excluded from the balance sheet. The financial information provided herein includes the revenues, direct costs, operating assets and liabilities directly attributable to the Optical Amplifier and Optical Transmitter and Receiver Businesses. The "Other movements in invested capital" above represents the increase or decrease in the net investment by the Nortel Networks Corporation Group in the Optical Amplifier and Optical Transmitter and Receiver Businesses.

        These unaudited financial statements are a combination of the financial statements of the divisions of the Optical Amplifier and Optical Transmitter and Receiver Businesses, which comprise the Division.

        All intra-Division transactions and balances have been eliminated on combination.

        The combined financial statements include interest income and expense actually earned by or charged to the Division. During the period ended June 30, 2002, the Division's operations were principally funded by share capital and loans from Nortel Networks Corporation Group companies. These financing arrangements were designed and implemented on a Nortel Networks Corporation Group basis, rather than from the perspective of the financing needs of the Division. The decisions as to whether to finance companies with share capital or loans were taken based on the financial position of the companies and local taxation considerations.

        The combined financial statements reflect management costs charged to the Division by Nortel Networks Corporation Group based on direct costs incurred. In the year ended December 31, 2001 and the six months ended June 30, 2002, these charges were allocated by formula to the Optical Amplifier and Optical Transmitter and Receiver Businesses based on headcount, space occupied and other appropriate measures. Prior to the year ended December 31, 2001, these costs were charged directly to the operating units. Management believes this is a reasonable basis of allocation, and that these costs would approximate those incurred by the division on a stand alone basis.

        The charge for taxation is based upon the results of the Optical Amplifier and Optical Transmitter and Receiver Businesses for each period as if the results represented those of taxable entities in each

F-10



territory at the corporate tax rate ruling for each period in each territory. Tax is assumed to be paid or received in the period the charge or credit arises. The basis of funding, interest charges and financing cash flows and related cash flows and management charges are not necessarily representative of those that would have been incurred by the Division on a stand-alone basis, or of those that may exist or arise in the Division in the future.

2      SPECIAL CHARGES

        The following tables detail special charges incurred for the six months ended June 30, 2002.

 
  Provision
balance as at
December 31,
2001

   
  Utilized in the period
  Provision
balance as at
June 30,
2002

 
  Special
Charges

 
  Cash
  Non cash
 
  £000,000

  £000,000

  £000,000

  £000,000

  £000,000

Restructuring activities:                    
  Severance and contract settlement costs   24.2   5.3   (11.0 )   18.5
  Plant and equipment write downs     105.0     (105.0 )
   
 
 
 
 
Total   24.2   110.3   (11.0 ) (105.0 ) 18.5
   
 
 
 
 

        The special charges arise from a restructuring of the continuing operations of the Optical Amplifier and Optical Transmitter and Receiver Businesses. The Telecommunications sector in which the Optical Amplifer and Optical Transmitter and Receiver Businesses operate has been affected globally by reduced network build expenditure. During the six months ended June 30, 2002 the Optical Amplifer and Optical Transmitter and Receiver Businesses announced head count and cost reduction plans which resulted in substantial charges.

        Special charges for June 30, 2001 of £4.1 million were provisioned and expensed. These costs relate to severance costs arising from the restructuring of the continuing operations of the Optical Amplifier and Optical Transmitter and Receiver Businesses, for both direct employees performing manufacturing, assembly, test and inspection activities associated with the production of Nortel Networks products, and indirect sales, marketing, and administrative employees, and manufacturing managers. Contract settlement costs of £1.2 million include negotiated settlements to either cancel contracts for the future purchase of fixed assets or inventory, or to renegotiate existing contracts for the future purchase of fixed assets or inventory. As a result of the significant negative industry and economic trends noted above, and expected future growth rates, an assessment of plant and equipment assets was made as part of management's review of financial results during the six months ended June 30, 2002. The conclusion of these assessments resulted in a write down of certain manufacturing plant and equipment. Due to the significant excess quantities of such plant and equipment for all similar other suppliers to the optical component market, management do not believe that these assets had a realizable value and consequently they were written down to £nil. Also, as result of the significant negative industry and economic trends noted above, inventory write-downs of £ 49,300,000 (2001: £nil) were incurred for excess and obsolete products.

F-11



3      OTHER INCOME

        The following table details other income in the six months ended June 30, 2002 and 2001 respectively:

 
  2002
  2001
 
  £000,000

  £000,000

Interest received   1.8  
Gain on disposal of property and plant   5.5  
   
 
Total   7.3  
   
 

F-12



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

REPORT OF INDEPENDENT AUDITORS

To the Board of Directors of Bookham Technology plc

        We have audited the accompanying combined statements of operations, invested capital and cash flows of the Optical Amplifier and Optical Transmitter and Receiver Businesses of Nortel Networks Corporation for each of the three years in the period ended December 31, 2001. These financial statements are the responsibility of Bookham Technology plc's management. Our responsibility is to express an opinion on these financial statements based on our audits.

        We conducted our audits in accordance with United Kingdom auditing standards and United States generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by the management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

        In our opinion, the combined financial statements referred to above present fairly in all material respects, the combined results of operations and combined cash flows of the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation for each of the three years in the period ended December 31, 2001 in conformity with accounting principles generally accepted in the United States.

        ERNST & YOUNG LLP

Reading, England
March 18, 2003

F-13



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

COMBINED STATEMENTS OF OPERATIONS

 
  Year ended December 31,
 
 
  2001
  2000
  1999
 
 
  £000,000

  £000,000

  £000,000

 
Net sales   262.2   1,029.3   319.7  
   
 
 
 
Costs and expenses:              
  Cost of revenues   257.1   739.0   245.7  
  Selling, general and administrative expense   51.1   32.0   18.1  
  Research and development expense   40.6   16.8   9.5  
  Special charges   305.7      
   
 
 
 
    654.5   787.8   273.3  
   
 
 
 
Operating (loss)/income   (392.3 ) 241.5   46.4  
Other income   7.5   0.7    
Interest expense   (0.9 )   (0.5 )
   
 
 
 
(Loss)/earnings before income taxes   (385.7 ) 242.2   45.9  
Income tax benefit/(provision)   38.2   (65.6 ) (9.2 )
   
 
 
 
Net (loss)/earnings   (347.5 ) 176.6   36.7  
   
 
 
 

See accompanying notes.

F-14



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

COMBINED STATEMENT OF INVESTED CAPITAL

 
  Year ended December 31,
 
 
  2001
  2000
  1999
 
 
  £000,000

  £000,000

  £000,000

 
Balance at beginning of year   306.1   126.0   79.6  
Comprehensive Income:              
  Net (loss)/earnings   (347.5 ) 176.6   36.7  
  Exchange translation adjustment   (3.2 ) 2.4   (2.2 )
Other movements in invested capital   207.1   1.1   11.9  
   
 
 
 
Balance at end of year   162.5   306.1   126.0  
   
 
 
 

See accompanying notes.

F-15



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

COMBINED STATEMENTS OF CASH FLOWS

 
  Year ended December 31,
 
 
  2001
  2000
  1999
 
 
  £000,000

  £000,000

  £000,000

 
Cash flows from operating activities              
Net (loss)/earnings   (347.5 ) 176.6   36.7  
Adjustments to reconcile net loss to net cash from operating activities:              
Depreciation and amortization   44.2   22.4   13.6  
  Impairment of property and equipment   116.3   12.2    
  Profit on sale of property and equipment   (7.5 )    
Change in operating assets and liabilities:              
  Accounts receivable   65.8   (43.3 ) (6.4 )
  Inventories   42.2   (63.3 ) (24.7 )
  Accounts payable and accrued liabilities   (38.3 ) 56.8   21.4  
  Other operating assets and liabilities   6.1   (2.4 ) 1.4  
   
 
 
 
Net cash from operating activities   (118.7 ) 159.0   42.0  
   
 
 
 
Cash flows (used in) investing activities              
Expenditures for property, plant and equipment   (92.7 ) (162.5 ) (51.7 )
Proceeds on disposals of property, plant and equipment   7.5      
   
 
 
 
Net cash used in investing activities   (85.2 ) (162.5 ) (51.7 )
   
 
 
 
Cash flows from financing activities              
Net movement in Invested Capital   203.9   3.5   9.7  
   
 
 
 
Net cash from financing activities of continuing operations   203.9   3.5   9.7  
   
 
 
 
Net increase in cash and cash equivalents        
Cash and cash equivalents at beginning of year        
   
 
 
 
Cash and cash equivalents at end of year        
   
 
 
 
Supplemental disclosure of cash flow information              
Interest paid   0.9     0.5  
Taxes paid     65.6   9.2  

See accompanying notes.

F-16



THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF
NORTEL NETWORKS CORPORATION

NOTES TO COMBINED FINANCIAL STATEMENTS

1      ORGANIZATION AND BASIS OF PREPARATION

        The Optical Amplifier and Optical Transmitter and Receiver Businesses operate from three principal locations in Paignton (UK), Ottawa (Canada), and Zurich (Switzerland) and also have small facilities in Harlow (UK) and Poughkeepsie, NY (United States).

        The Optical Amplifier and Optical Transmitter and Receiver Businesses have historically operated and been managed as an integral part of the High Performance Optical Component Systems (HPOCS) division of Nortel Networks Corporation. The Optical Amplifier and Optical Transmitter and Receiver Businesses (the "Division") were acquired by Bookham Technology plc on 8 November 2002.

        These financial statements are a combination of the financial statements of the divisions of the Optical Amplifier and Optical Transmitter and Receiver Businesses, which comprise the Division.

        All intra-Division transactions and balances have been eliminated on combination.

        The combined financial statements include interest income and expense actually earned by or charged to the Division. During the years ended December 31, 2001, 2000 and 1999, the Division's operations were principally funded by share capital and loans from Nortel Networks Corporation Group companies. These financing arrangements were designed and implemented on a Nortel Networks Corporation Group basis, rather than from the perspective of the financing needs of the Division. The decisions as to whether to finance companies with share capital or loans were taken based on the financial position of the companies and local taxation considerations.

        Nortel Networks Corporation operated the activities of its divisions such that certain assets and liabilities not directly attributable to the Optical Amplifier and Optical Transmitter and Receiver Businesses (notably cash and borrowings) were excluded from the balance sheet. The financial information provided herein includes the revenues, direct costs, operating assets and liabilities directly attributable to the Optical Amplifier and Optical Transmitter and Receiver Businesses. The "Other movements in invested capital" above represents the increase or decrease in the net investment by the Nortel Networks Corporation Group in the Optical Amplifier and Optical Transmitter and Receiver Businesses.

        The combined financial statements reflect management costs charged to the Division by Nortel Networks Corporation Group based on direct costs incurred. In the year ended December 31, 2001 and the six months ended June 30, 2002, these charges were allocated by formula to the Optical Amplifier and Optical Transmitter and Receiver Businesses based on headcount, space occupied and other appropriate measures. Prior to the year ended December 31, 2001, these costs were charged directly to the operating units. Management believes this is a reasonable basis of allocation, and that these costs would approximate those incurred by the division on a stand alone basis.

        The basis of funding, interest charges and financing cash flows and related cash flows and management charges are not necessarily representative of those that would have been incurred by the Division on a stand-alone basis.

        The charge for taxation is based upon the results of The Optical Amplifier and Optical Transmitter and Receiver Businesses for each period as if the results represented those of taxable entities in each territory at the corporate tax rate ruling for each period in each territory. Tax is assumed to be paid or received in the period the charge or credit arises.

F-17



2      SIGNIFICANT ACCOUNTING POLICIES

Revenue recognition

        Revenue, net of trade discounts and allowances, is recognized upon shipment and when all significant contractual obligations have been satisfied and collection is reasonably assured.

Use of estimates

        The preparation of the combined financial statements in conformity with generally accepted accounting principles in the United States requires management to make estimates and assumptions that affect the amounts reported in the combined financial statements. Actual amounts could differ from such estimates.

Cash and cash equivalents

        All highly liquid investments with original maturities of three months or less are classified as cash and cash equivalents. The fair value of cash and cash equivalents approximates the amounts shown in the financial statements. Cash and cash equivalents consist of cash on hand and balances with banks.

Inventories

        Inventories are valued at the lower of cost (calculated on a first-in, first-out basis) and net realizable value. The cost of finished goods and work in process is comprised of material, labor and manufacturing overhead.

Property and equipment

        Property and equipment are stated at cost less accumulated depreciation and any impairment in value. Depreciation is calculated generally on a straight-line basis over the expected useful lives of the plant and equipment. The expected useful lives of property are thirty-three to fifty years, and of equipment are four to ten years. Depreciation is not provided on construction in progress.

Translation of foreign currencies

        The functional currency of the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation is Pounds sterling. The financial statements of the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation operations whose functional currency is other than Pounds sterling are translated from such functional currency to Pounds sterling at the exchange rates in effect at the balance sheet date for assets and liabilities, and at average rates for the period for revenues and expenses, including gains and losses on foreign exchange transactions.

 
  Year ended December 31,
 
Cumulative translation adjustment

 
  2001
  2000
  1999
 
 
  £000,000

  £000,000

  £000,000

 
Balance at beginning of year   0.2   (2.2 )  
Aggregate period adjustment   (3.2 ) 2.4   (2.2 )
Income tax allocation        
   
 
 
 
Balance at end of year   (3.0 ) 0.2   (2.2 )
   
 
 
 

F-18


Research and development

        Research and development costs are charged to net earnings (loss) in the periods in which they are incurred.

Income taxes

        Income taxes are accounted for under the liability method and deferred tax assets and liabilities are determined based on temporary differences between financial reporting and tax bases of assets and liabilities. Current and deferred income taxes have been allocated to the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation as if the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation was a separate tax payer.

3      SEGMENTAL ANALYSIS

        The Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation operates in one area of activity—the design and distribution of telecommunication components. It also operates in three principal geographical markets—the United Kingdom, Switzerland and Canada.

Net sales by destination

 
  2001
  2000
  1999
 
  £000,000

  £000,000

  £000,000

European Union   74.8   197.3   57.1
Asia Pacific   18.1   11.0   7.1
North America   169.3   821.0   255.5
   
 
 
    262.2   1,029.3   319.7
   
 
 

Net sales by origin

 
  2001
  2000
  1999
 
  £000,000

  £000,000

  £000,000

United Kingdom   217.4   922.0   293.0
Switzerland   33.9   40.8   26.7
Canada   10.9   66.5  
   
 
 
    262.2   1,029.3   319.7
   
 
 

Net (loss)/earnings before income taxes by origin

 
  2001
  2000
  1999
 
  £000,000

  £000,000

  £000,000

United Kingdom   (321.4 ) 214   28.6
Switzerland   (15.5 ) 26.7   17.0
Canada   (48.8 ) 1.5   0.3
   
 
 
    (385.7 ) 242.2   45.9
   
 
 

F-19


4      SPECIAL CHARGES

        The following tables detail special charges incurred for the year ended December 31, 2001:

 
   
  Utilized in the period
  Provision
balance as at
December 31,
2001

 
  Special
Charges

 
  Cash
  Non cash
 
  £000,000

  £000,000

  £000,000

  £000,000

Restructuring activities:                
  Severance and contract settlement costs   91.3   67.7     24.2
  Plant and equipment write downs   116.3     116.3  
   
 
 
 
Total   207.6   67.7   116.3   24.2
   
 
 
 

        The special charges arise from a restructuring of the continuing operations of the Optical Amplifier and Optical Transmitter and Receiver Businesses. The Telecommunications sector in which the Optical Amplifer and Optical Transmitter and Receiver Businesses operate has been affected globally by reduced network build expenditure. During the year ended December 31, 2001 the Optical Amplifer and Optical Transmitter and Receiver Businesses announced head count and cost reduction plans which resulted in substantial charges. Severance costs included above total £25,300,000 and represent the cost incurred of severing 4,185 full time employees, for both direct employees performing manufacturing, assembly, test and inspection activities associated with the production of Nortel Networks products, and indirect sales, marketing, and administrative employees, and manufacturing managers. Contract settlement costs of £66,000,000 include negotiated settlements to either cancel contracts for the future purchase of fixed assets or inventory, or to renegotiate existing contracts for the future purchase of fixed assets or inventory. As a result of the significant negative industry and economic trends noted above, and expected future growth rates, an assessment of plant and equipment assets was made as part of management's review of financial results during 2001. The conclusion of these assessments resulted in a write down of certain manufacturing plant and equipment. Due to the significant excess quantities of such plant and equipment for all similar other suppliers to the optical component market, management do not believe that these assets had a realizable value and consequently they were written down to £nil. Also, as result of the significant negative industry and economic trends noted above, inventory write-downs of £98,100,000 (2000: £nil, 1999: £nil) were incurred for excess and obsolete products.

5      OTHER INCOME

        The following tables details other income in the years ended December 31:

 
  2001
  2000
  1999
 
  £000,000

  £000,000

  £000,000

Interest received     0.7  
Gain on disposal of property and plant   7.5    
   
 
 
Total   7.5   0.7  
   
 
 

F-20


6      PENSION AND OTHER POSTRETIREMENT BENEFITS

        Retirement benefits were provided for eligible employees principally by Nortel Networks Corporation Group pension schemes.

        Nortel Networks Corporation operates a number of pension plans throughout the world. The major plans are defined benefit self-administered funds, with assets held separately from those of the Nortel Networks Corporation group. The pension contributions to the defined benefit plans are assessed in accordance with the advice of independent qualified actuaries using the projected unit credit method or, where appropriate for closed schemes, the attained age method.

        These plans have been treated as multi-employer plans and, accordingly, pension and postretirement benefit expense for the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation represent the pension contributions made by the Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation. The Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation's pension expense amounted to £7,800,000, £7,400,000 and £4,400,000, for the years ended December 31, 2002, 2000, and 1999, respectively.

7      TAXATION

        The Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation were part of the tax arrangement of the Nortel Networks Group for the three years ended December 31, 2001. The income tax charge/(credit) represents foreign tax and is group relief payable/(receivable) payable/receivable by other Nortel Networks Corporation group undertakings. Income taxes have been allocated to the Division as if it were a separate tax payer.

        The taxation charge/(credit) is made up as follows:

 
  2001
  2000
  1999
 
  £000,000

  £000,000

  £000,000

Income tax   (38.2 ) 65.6   9.2
Deferred taxation      
   
 
 
    (38.2 ) 65.6   9.2
   
 
 

        The effective income tax rate varies from the normal corporate income tax rate in the UK of 30% due to amounts charged in the financial statements for which no tax deduction is ever available.

 
  2001
  2000
  1999
 
 
  £000,000

  £000,000

  £000,000

 
(Loss)/earnings before income taxes   (385.7 ) 242.2   45.9  
   
 
 
 
(Loss)/earnings multiplied by standard rate of corporation tax in the UK   (115.7 ) 72.7   13.8  
Expenses not deductible for corporation tax   83.0   3.0   (0.7 )
Decelerated (accelerated) capital allowances   (0.8 ) (3.2 ) (1.8 )
Higher taxes on overseas earnings   (4.7 ) (6.9 ) (2.1 )
   
 
 
 
Total income tax   (38.2 ) 65.6   9.2  
   
 
 
 

F-21


8      RELATED PARTY DISCLOSURE

        The Optical Amplifier and Optical Transmitter and Receiver businesses of Nortel Networks Corporation does not operate as a separate group and is financially dependent upon Nortel Networks Corporation. Consequently there were a number of related party transactions between its businesses and other companies and businesses within Nortel Networks Group. All transactions were undertaken at arm's length and in the ordinary course of business. Transactions entered into with respect to each year ended December 31, were as follows:

 
  Sales to
related party

  Purchases
from
related party

 
  £000,000

  £000,000

Nortel Networks Corporation Group Undertakings        
  1999   200.3   5.3
  2000   756.3   40.5
  2001   139.5   9.1

F-22



PART II

INFORMATION NOT REQUIRED IN PROSPECTUS


Item 8.    Indemnification of Directors and Officers.

        Subject to applicable English law, our directors and officers will be indemnified by us and/or exempted by us from all costs, charges, losses and liabilities incurred by them in the actual or purported exercise or discharge of their powers or duties. This indemnity and exemption includes any liability incurred by them in defending any civil or criminal proceedings which relate to anything done or alleged to have been done by them as our officer or employee and in which judgment is given in their favor; or where proceedings are disposed of without any finding or admission or any material breach of duty on their part; or in which they are acquitted or in respect of which relief from liability is granted.

        Our directors have the power to purchase and maintain insurance for, or for the benefit of, any persons that are or were at any time a director or officer of us or any company we control or that is part of our group (a "Relevant Company") or that are or were trustees of any pension fund or employees' share scheme in which employees of any Relevant Company are interested. Such insurance may include insurance against any liability incurred by them in respect of any act or omission in the actual or purported exercise or discharge of their powers or duties in relation to any Relevant Company, or such pension fund or employees' share scheme.

II-1



Item 9.    Exhibits.

Exhibit
Number

  Description
2.1   Acquisition Agreement dated as of October 7, 2002 between Nortel Networks Corporation and the Registrant (previously filed as Exhibit 1 to Schedule 13D filed by Nortel Networks Corporation on October 17, 2002, and incorporated herein by reference).

4.1

 

Memorandum of Association of the Registrant (previously filed as Exhibit 3.1 Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.2

 

Articles of Association of the Registrant, as amended through November 5, 2002 (previously filed as Exhibit 1.2 to Annual Report on Form 20-F for the year ended December 31, 2002, and incorporated herein by reference).

4.3

 

Form of Deposit Agreement (previously filed as Exhibit 4.2 to Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.4

 

Specimen Ordinary Share Certificate (previously filed as Exhibit 4.1 to Registration Statement on From F-1, as amended (file no. 333-11698) dated April 11, 2000, and incorporated herein by reference).

4.5

 

Form of ADR Certificate (previously filed as Exhibit 4.3 to Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.6

 

Registration Rights Agreement dated as of November 8, 2002 among Nortel Networks Corporation, the Nortel Networks Subsidiaries listed on the signature page thereto and the Registrant (previously filed as Exhibit 4.5 to Annual Report on Form 20-F for the year ended December 31, 2002, and incorporated herein by reference).

5.1

 

Opinion of Hale and Dorr.

23.1

 

Consent of Ernst & Young LLP.

23.2

 

Consent of Ernst & Young LLP.

23.3

 

Consent of PricewaterhouseCoopers.

23.4

 

Consent of Hale and Dorr, included in Exhibit 5.1 filed herewith.

24.1

 

Power of Attorney (previously filed).

II-2



Item 10.    Undertakings.

        Item 512(a) of Regulation S-K.    The undersigned Registrant hereby undertakes:

        (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), that are incorporated by reference in this Registration Statement.

        (2) That, for the purposes of determining any liability under the Securities Act, each post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

        (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

        (4) If the registrant is a foreign private issuer, to file a post-effective amendment to this Registration Statement to include any financial statements required by Item 8.A. of Form 20-F at the start of any delayed offering or throughout a continuous offering. Financial statements and information otherwise required by Section 10(a)(3) of the Exchange Act need not be furnished, provided, that the Registrant includes in the prospectus, by means of a post-effective amendment, financial statements required pursuant to Item 512(a)(4) of Regulation S-K and other information necessary to ensure that all other information in the prospectus is at least as current as the date of those financial statements. Notwithstanding the foregoing, with respect to registration statements on Form F-3, a post-effective amendment need not be filed to include financial statements and information required by Section 10(a)(3) of the Exchange Act or Rule 3-19 of Regulation S-X if such financial statements and information are contained in periodic reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the Form F-3.

        Item 512(b) of Regulation S-K.    The Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee

II-3



benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

        Item 512(h) of Regulation S-K.    Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the indemnification provisions described herein, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form F-3 and has duly caused this Amendment No. 2 to Registration Statement on Form F-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in Abingdon, England, on September 10, 2003.


 

 

BOOKHAM TECHNOLOGY PLC

 

 

By:

/s/  
STEPHEN ABELY      
Stephen Abely
Chief Financial Officer

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        Pursuant to the requirements of the Securities Act of 1933, as amended, this Amendment No. 2 to Registration Statement on Form F-3 has been signed by the following persons in the capacities and on the dates indicated.

Name
  Title
  Date

 

 

 

 

 
*
Giorgio Anania
  President, Chief Executive
Officer and Director
(Principal Executive Officer)
  September 10, 2003

/s/  
STEPHEN ABELY      
Stephen Abely

 

Chief Financial Officer
(Principal Financial
and Accounting Officer)

 

September 10, 2003

*

Andrew G. Rickman

 

Chairman and Director

 

September 10, 2003


Jack St. Clair Kilby

 

Director

 

September 10, 2003

*

Lori Holland

 

Director

 

September 10, 2003


W. Arthur Porter

 

Director

 

September 10, 2003

*

Robert J. Rickman

 

Director

 

September 10, 2003

*

David Simpson

 

Director

 

September 10, 2003

*

Joseph Cook

 

Director

 

September 10, 2003

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BOOKHAM TECHNOLOGY, INC.        

By:
Name:
Title:

 

/S/  BYRON TROP      
Byron Trop
Vice President, Sales

 

Authorized Representative in the United States

 

September 10, 2003

*By:

 

/S/  STEPHEN ABELY      

 

 

 

 
Name:
Title:
  Stephen Abely
Attorney-in-fact
       

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EXHIBIT INDEX

Exhibit Number

  Description
2.1   Acquisition Agreement dated as of October 7, 2002 between Nortel Networks Corporation and the Registrant (previously filed as Exhibit 1 to Schedule 13D filed by Nortel Networks Corporation on October 17, 2002, and incorporated herein by reference).

4.1

 

Memorandum of Association of the Registrant (previously filed as Exhibit 3.1 Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.2

 

Articles of Association of the Registrant, as amended through November 5, 2002 (previously filed as Exhibit 1.2 to Annual Report on Form 20-F for the year ended December 31, 2002, and incorporated herein by reference).

4.3

 

Form of Deposit Agreement (previously filed as Exhibit 4.2 to Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.4

 

Specimen Ordinary Share Certificate (previously filed as Exhibit 4.1 to Registration Statement on Form F-1, as amended (file no. 333-11698) dated April 11, 2000, and incorporated herein by reference).

4.5

 

Form of ADR Certificate (previously filed as Exhibit 4.3 to Registration Statement on Form F-1, as amended (file no. 333-11698), dated April 11, 2000, and incorporated herein by reference).

4.6

 

Registration Rights Agreement dated as of November 8, 2002 among Nortel Networks Corporation, the Nortel Networks Subsidiaries listed on the signature page thereto and the Registrant (previously filed as Exhibit 4.5 to Annual Report on Form 20-F for the year ended December 31, 2002, and incorporated herein by reference).

5.1

 

Opinion of Hale and Dorr.

23.1

 

Consent of Ernst & Young LLP.

23.2

 

Consent of Ernst & Young LLP.

23.3

 

Consent of PricewaterhouseCoopers.

23.4

 

Consent of Hale and Dorr, included in Exhibit 5.1 filed herewith.

24.1

 

Power of Attorney (previously filed).

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QuickLinks

TABLE OF CONTENTS
PROSPECTUS SUMMARY
Bookham Technology plc
The Offering
RISK FACTORS
CAPITALIZATION
USE OF PROCEEDS
THE OFFERING
SELLING STOCKHOLDERS
MATERIAL CHANGES
PLAN OF DISTRIBUTION
EXPENSES OF ISSUANCE AND DISTRIBUTION
SHARE CAPITAL
DIVIDENDS
EXPERTS
LEGAL MATTERS
WHERE YOU CAN FIND MORE INFORMATION
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
ENFORCEMENT OF CIVIL LIABILITIES
SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION
INDEX TO FINANCIAL INFORMATION
BOOKHAM TECHNOLOGY PLC UNAUDITED PRO FORMA CONDENSED CONSOLIDATED PROFIT AND LOSS ACCOUNT For the year ended December 31, 2002
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION UNAUDITED COMBINED STATEMENT OF OPERATIONS For the six months ended June 30,
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION UNAUDITED COMBINED STATEMENT OF INVESTED CAPITAL
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION UNAUDITED COMBINED STATEMENTS OF CASH FLOWS For the six months ended June 30,
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION NOTES TO THE UNAUDITED COMBINED FINANCIAL STATEMENTS
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION REPORT OF INDEPENDENT AUDITORS
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION COMBINED STATEMENTS OF OPERATIONS
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION COMBINED STATEMENT OF INVESTED CAPITAL
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION COMBINED STATEMENTS OF CASH FLOWS
THE OPTICAL AMPLIFIER AND OPTICAL TRANSMITTER AND RECEIVER BUSINESSES OF NORTEL NETWORKS CORPORATION NOTES TO COMBINED FINANCIAL STATEMENTS
PART II INFORMATION NOT REQUIRED IN PROSPECTUS
SIGNATURES
EXHIBIT INDEX