Notice of Results

Spirent PLC
15 January 2004

                                                           826 - 15 January 2004



                                  SPIRENT PLC



                      NOTIFICATION OF PRELIMINARY RESULTS



Spirent plc (LSE: SPT; NYSE: SPM), a leading international network technology
company, announces that it intends to release its preliminary results for the
year to 31 December 2003 on Wednesday 25 February 2004 before the opening of the
UK market.



Nicholas Brookes (Chief Executive) and Eric Hutchinson (Finance Director) will
host a results presentation at 09.00 London time on Wednesday 25 February 2004,
a webcast of which will be available on the Spirent plc website at
www.spirent.com/investors from 15.00 London time/10.00 EST.



An analysts conference call will also be held at 16.00 London time/11.00 EST on
that day.



                                    - ends -



Enquiries


Nicholas Brookes, Chief Executive            Spirent plc                     [phone]
Eric Hutchinson, Finance Director

Investor Relations

Catherine Nash                               Spirent plc                     [phone]

Media

Jon Coles/Rupert Young                       Brunswick                       [phone]



About Spirent



Spirent plc is an international network technology company providing
state-of-the-art systems and solutions for a broad range of customers.  Our
Communications group is a worldwide provider of integrated performance analysis
and service assurance systems for next-generation network technologies.
Spirent's solutions enable customers to develop, deploy and assure network
equipment and services more economically and efficiently by emulating real-world
conditions and assuring end-to-end performance of large-scale networks.  Our
Network Products group provides innovative solutions for fastening, identifying,
insulating, organising, routing and connectivity that add value to electrical
and communication networks in a wide range of applications.  Our Systems group
offers integrated solutions for the power controls and aerospace markets.
Further information about Spirent plc can be found at www.spirent.com



Spirent plc is listed on the London Stock Exchange (ticker: SPT) and on the New
York Stock Exchange (ticker: SPM; CUSIP number: 84856M209) with one American
Depositary Receipt representing four Ordinary shares.



Spirent and the Spirent logo are registered trademarks of Spirent plc.  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.




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