SOURCE: Spirent Communications PLC

October 25, 2006 12:26 ET

Spirent Communications PLC - Transaction in Own Shares

Crawley, UK -- (MARKET WIRE) -- October 25, 2006 --Spirent Communications Plc

Transaction in Own Shares

Spirent Communications PLC announces that it has today purchased through Citigroup Global Markets U.K. Equity Limited 1,000,000 ordinary shares at an average price of 58.889 pence per share. The highest price and the lowest price paid for these shares were 61.5 pence and 58.25 pence respectively.

Following the above purchase, Spirent Communications plc holds 82,790,000 Spirent Communications plc ordinary shares in treasury, and has 891,449,240 Spirent Communications plc ordinary shares in issue (excluding treasury shares).

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