SOURCE: Spirent Communications PLC

July 19, 2006 12:26 ET

Spirent Communications PLC announces Transaction in Own Shares

Crawley, UK -- (MARKET WIRE) -- July 19, 2006 --

Spirent Communications plc announces that on 19 July 2006 it purchased from JPMorgan Cazenove Limited 800,000 Spirent Communications plc ordinary shares at an average price of 34.6823 pence per share. The purchased shares will be held as treasury shares. Following the above purchase, Spirent Communications plc holds 31,040,000 Spirent Communications plc ordinary shares in treasury, and has 939,835,758 Spirent Communications plc ordinary shares in issue (excluding treasury shares).

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