Additional Listing

Spirent PLC
31 October 2001


Spirent plc

Application has been made to The UK Listing Authority and the London Stock
Exchange for a block listing of 3,500,000 Ordinary shares of 3 1/3p each under
the U.S Stock Purchase Plan, to trade on the London Stock Exchange and to be
admitted to the Official List upon issuance. The shares shall rank pari passu
with the existing issued shares of the Company.

Copies of this announcement are available from the office of Cazenove & Co.
Ltd for the period of 2 business days from the date hereof.