Document on display at UKLA

Spirent PLC
15 August 2003


Friday, 15 August 2003

SPIRENT plc (London Stock Exchange: SPT; New York Stock Exchange: SPM)
Documents for the Spirent Stock Option Plan Option Exchange Program


At an Extraordinary General Meeting held on 9 July 2003, Spirent plc (Spirent)
shareholders approved the Option Exchange Program and the renewal of the Spirent
Stock Option Plan (SSOP).  Accordingly, Spirent is today commencing the Option
Exchange Offer for eligible employee holders of stock options under the SSOP.
Under the terms of the Option Exchange Offer, eligible employees will be able to
exchange their 'underwater' options (i.e. options having an exercise price of
£1.40 per share or greater) for replacement options as provided under the Option
Exchange Program.  The Offer, which is commencing today, 15 August 2003, will
expire at 5:00 p.m. US Eastern time on 15 September 2003, unless extended.

The Option Exchange Program documentation (collectively referred to as the 'OEP
Package') consists of the Tender Offer Statement filed with the U.S. Securities
and Exchange Commission on Schedule TO and all exhibits thereto, including the
Option Exchange Offer document (and all schedules thereto) and the Option
Election Agreement and Promise to Grant Stock Options.

A copy of the OEP Package has been submitted to the UK Listing Authority, and
will be available for inspection from 15 August 2003 at the UK Listing
Authority's Document Viewing Facility, which is situated at:

Financial Services Authority
25 The North Colonnade
Canary Wharf
London
E14 5HS
Tel: [phone]

Copies of the above documents are also being filed with the U.S. Securities and
Exchange Commission and are available for inspection at http://www.sec.gov.


Yours faithfully


Warren Nash


                      This information is provided by RNS
            The company news service from the London Stock Exchange