Additional Listing

Spirent PLC
27 May 2004



Spirent plc.



Application has been made to The UK Listing Authority and the London Stock
Exchange for a block listing of 3,000,000 Ordinary shares of 3 1/3p each under
the Spirent Executive Share Option Scheme, 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.




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