23rd Nov 2007 16:43
Spirent Communications PLC23 November 2007 TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing Spirent Communications plcshares to which voting rights are attached: 2. Reason for the notification (please tick the appropriate box or boxes) An acquisition or disposal of voting rights X An acquisition or disposal of financial instruments which may result in the acquisition ofshares already issued to which voting rights are attached An event changing the breakdown of voting rights Other (please specify):___________________________________________ 3. Full name of person(s) subject to the notification Sun Life Assurance Company of Canada (UK) Ltdobligation: 4. Full name of shareholder(s) (if different from 3.): ROY Nominees Limited 5. Date of the transaction (and date on which the threshold is 20-11-2007crossed or reached if different): 6. Date on which issuer notified: 23-11-2007 7. Threshold(s) that is/are crossed or reached: 3% 8. Notified details: A: Voting rights attached to sharesClass/type of Situation previous to the Resulting situation after the triggering transactionshares Triggering transaction Number of Number of Number of Number of voting rights % of voting rights if possible using Shares Voting sharesthe ISIN CODE Rights Direct Direct Indirect Direct Indirect GB0004726096 29,803,233 29,803,233 35,833,473 35,833,473 4.36% B: Financial InstrumentsResulting situation after the triggering transaction xiiType of financial Expiration date Exercise/ Conversion Number of voting rights % of votinginstrument xiii Period/ Date xiv that may be acquired if rights the instrument is exercised/ converted. Total (A+B)Number of voting rights % of voting rights 35,833,473 4.36% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectivelyheld, if applicable xv: Credit Suisse Asset Management Ltd is making this disclosure on behalf of Sun Life Assurance Company of Canada (UK) Ltdto whom we act as discretionary investment manager. Credit Suisse Asset Management Limited is a segregated business unit within Credit Suisse Group (CSG) with anindependent management structure and exercises its voting rights independently from other parts of CSG. Proxy Voting:10. Name of the proxy holder:11. Number of voting rights proxy holder will cease to hold:12. Date on which proxy holder will cease to hold voting rights: 13. Additional information:14. Contact name: Rebecca Suckling15. Contact telephone number: 020 7883 9645 C: Additional informationContact at Issuer: Michael Anscombe, Company Secretary, Spirent Communications plc Telephone: 01293 767676 This information is provided by RNS The company news service from the London Stock ExchangeRelated Shares:
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