Directorate Change

Spirent Communications PLC 29 May 2007 SPIRENT COMMUNICATIONS PLC NOTIFICATION OF BOARD CHANGE London, UK - 29 May 2007: Spirent Communications plc ("Spirent" or "the Company") (LSE: SPT; NYSE: SPM), a leading communications technology company, announces that Goran Ennerfelt stood down as a non-executive director with effect from 24 May 2007. Mr Ennerfelt joined the Spirent Board in December 2000 at the time of the Company's acquisition of Hekimian Laboratories, Inc., and has served as a non-executive director since that time. Edward Bramson, Chairman of Spirent said: "Goran has made a major contribution to the work of the Spirent Board. We wish him every success for the future." - ends - Enquiries Edward Bramson, Executive Chairman Spirent Communications plc +1 212 735 1000 Andrew Dowler/Harriet Keen Financial Dynamics +44 (0)20 7831 3113 About Spirent Communications plc Spirent Communications plc is a leading communications technology company focused on delivering innovative systems and services to meet the needs of customers worldwide. We are a global provider of performance analysis and service assurance solutions that enable the development and deployment of next-generation networking technologies such as broadband services, Internet telephony, 3G wireless and web applications and security testing. The Systems group develops power control systems for specialist electrical vehicles in the mobility and industrial markets. Further information about Spirent Communications plc can be found at www.spirent.com. Spirent Communications plc Ordinary shares are traded on the London Stock Exchange (ticker: SPT) and on the New York Stock Exchange (ticker: SPM; CUSIP number: 84856M209) in the form of American Depositary Shares ("ADS"), represented by American Depositary Receipts, with one ADS representing four Ordinary shares. Spirent and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved. This press release may contain forward-looking statements that are based on current expectations or beliefs, as well as assumptions about future events. By their nature, forward-looking statements are inherently predictive, speculative and involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future. You should not place undue reliance on these forward-looking statements, which are not a guarantee of future performance and are subject to factors that could cause our actual results to differ materially from those expressed or implied by these statements. These risks include the risks described from time to time in Spirent Communications plc's Securities and Exchange Commission periodic reports and filings. The Company undertakes no obligation to update any forward-looking statements contained in this press release, whether as a result of new information, future events or otherwise. This information is provided by RNS The company news service from the London Stock Exchange D
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