Result of AGM

Spirent PLC
04 May 2006


                                  SPIRENT PLC
                                ('the Company')

                        RESULTS OF ANNUAL GENERAL MEETING

London, UK - 4 May 2006: Spirent plc (LSE: SPT; NYSE: SPM), a leading
communications technology company, announces that at the Annual General Meeting
of the Company held yesterday, all resolutions as set out in the Notice of 2006
Annual General Meeting dated 15 March 2006 were duly passed.

The proxy voting figures can be viewed by visiting our website at www.spirent.com.

The Company is pleased to confirm the following:

•  That the new company name, Spirent Communications plc was approved by 
   shareholders at the Annual General Meeting;

•  That the on-market share repurchase programme through which the Company 
   intends to return up to £50 million to shareholders, having been approved by 
   shareholders, will commence shortly; and

•  As stated in the Annual Report 2005, James Wyness, senior independent 
   director, retired from the Board with effect from 3 May 2006 and 
   Marcus Beresford was appointed as the new senior independent director. As a
   result of this change in role, Mr Beresford relinquishes his position as
   Chairman of the Remuneration Committee (although remains a member of that
   Committee) and Fred D'Alessio replaces him as Chairman of that Committee. Mr
   D'Alessio is also appointed as a member of the Audit Committee following the
   retirement of Mr Wyness.

                                     - ends -
Enquiries

Paul Eardley                      Spirent plc                [phone]
Company Secretary

Michael Anscombe
Deputy Company Secretary

About Spirent

Spirent plc is a leading communications technology company focused on delivering
innovative systems and services to meet the needs of customers worldwide.  We
are a global provider of performance analysis and service assurance solutions
that enable the development and deployment of next-generation networking
technologies such as broadband services, Internet telephony, 3G wireless and web
applications and security testing.  The Systems group develops power control
systems for specialist electrical vehicles in the mobility and industrial
markets.  Further information about Spirent plc can be found at www.spirent.com

Spirent Ordinary shares are traded on the London Stock Exchange (ticker: SPT)
and on the New York Stock Exchange (ticker: SPM; CUSIP number: 84856M209) in the
form of American Depositary Shares (ADS), represented by American Depositary
Receipts, with one ADS representing four Ordinary shares.

Spirent and the Spirent logo are trademarks or registered trademarks of Spirent
plc.  All other trademarks or registered trademarks mentioned herein are held by
their respective companies.  All rights reserved.

This press release may contain forward-looking statements that are based on
current expectations or beliefs, as well as assumptions about future events.  By
their nature, forward-looking statements are inherently predictive, speculative
and involve risk and uncertainty because they relate to events and depend on
circumstances that will occur in the future.  You should not place undue
reliance on these forward-looking statements, which are not a guarantee of
future performance and are subject to factors that could cause our actual
results to differ materially from those expressed or implied by these
statements.  These risks include the risks described from time to time in
Spirent plc's Securities and Exchange Commission periodic reports and filings.
The Company undertakes no obligation to update any forward-looking statements
contained in this press release, whether as a result of new information, future
events or otherwise.


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            The company news service from the London Stock Exchange