Spirent Communications PLC announces - Transaction in Own Shares


Crawley, UK -- (MARKET WIRE) -- November 20, 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 600,000 ordinary shares at an average price of 57.6924 pence per share. The highest price and the lowest price paid for these shares were 58.75 pence and 55.5 pence respectively.

Following the above purchase, Spirent Communications plc holds 89,651,487 Spirent Communications plc ordinary shares in treasury, and has 885,800,064 Spirent Communications plc ordinary shares in issue (excluding treasury shares).

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