SOURCE: Spirent Communications PLC

July 27, 2006 12:37 ET

Spirent Communications PLC announces Transaction in Own Shares

Crawley, UK -- (MARKET WIRE) -- July 27, 2006 --

Spirent Communications plc announces that on 27 July 2006 it purchased from JPMorgan Cazenove Limited 1,000,000 Spirent Communications plc ordinary shares at an average price of 34.9876 pence per share. The purchased shares will be held as treasury shares. Following the above purchase, Spirent Communications plc holds 35,140,000 Spirent Communications plc ordinary shares in treasury, and has 935,786,070 Spirent Communications plc ordinary shares in issue (excluding treasury shares).

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