Directorate Change

Spirent Communications PLC
29 December 2006


                           SPIRENT COMMUNICATIONS PLC

                               BOARD COMPOSITION


London, UK - 29 December 2006: Spirent Communications plc ("Spirent" or "the
Company") (LSE: SPT; NYSE: SPM), a leading technology communications company,
today announces the following changes to the structure of the Board (all
effective from Friday, 22 December 2006) following the outcome of the
Extraordinary General Meeting ("EGM") held on Friday, 22 December 2006:


•  Edward Bramson has been elected as Chairman of the Board and appointed
   as Chairman of the Nomination Committee;

•  Ian Brindle has been appointed as a Non-Executive Director and
   Chairman of the Audit Committee. He has also been appointed as a member of 
   the Remuneration Committee and Nomination Committee;

•  Alexander Walker has been appointed as the Senior Independent
   Non-Executive Director and Chairman of the Remuneration Committee. He has 
   also been appointed as a member of the Audit Committee and Nomination 
   Committee; and

•  Gerard Eastman has been appointed as a Non-Executive Director and a
   member of the Audit, Remuneration and Nomination Committees.


The other members of the Board where roles and responsibilities have not changed
are as follows:


Anders Gustafsson (Chief Executive Officer and a member of the Nomination
Committee), Eric Hutchinson (Chief Financial Officer) and Goran Ennerfelt
(Non-Executive Director and a member of the Nomination Committee).


A further announcement will be made in due course in compliance with UK Listing
Rule paragraph 9.6.13R (1) to (6) together with any interests in the securities
of the Company.

                                    - ends -


Enquiries

Paul Eardley    Company Secretary & General Counsel           [phone]


About Spirent Communications plc

Spirent Communications 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
Communications plc can be found at www.spirent.com.

Spirent Communications plc 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
Communications 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 (as that term is
defined in the United States Private Securities Litigation Reform Act of 1995)
based on current expectations or beliefs, as well as assumptions about future
events.  You can sometimes, but not always, identify these statements by the use
of a date in the future or such words as "will", "anticipate", "estimate",
"expect", "project", "intend", "plan", "should", "may", "assume" and other
similar words.  By their nature, forward-looking statements are inherently
predictive and 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.  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