SOURCE: Spirent Communications PLC

July 31, 2006 11:58 ET

Spirent Communications PLC announces Transaction in Own Shares

Crawley, UK -- (MARKET WIRE) -- July 31, 2006 --

Spirent Communications plc announces that on 31 July 2006 it purchased from JPMorgan Cazenove Limited 1,000,000 Spirent Communications plc ordinary shares at an average price of 34.0266 pence per share. The purchased shares will be held as treasury shares. Following the above purchase, Spirent Communications plc holds 37,140,000 Spirent Communications plc ordinary shares in treasury, and has 933,836,070 Spirent Communications plc ordinary shares in issue (excluding treasury shares).

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