Re Agreement

795 - 12 November 2001

                                  SPIRENT PLC                                  

                 SALE OF SENSING SOLUTIONS BUSINESS COMPLETED                  

Spirent plc, the international network technology company, has completed the
sale of its Sensing Solutions business to a company formed by GE Industrial
Systems, a division of General Electric Company of the United States, following
satisfaction of all conditions in the sale agreement. Spirent announced the
divestment of its Sensing Solutions business on 10 September 2001.

Nicholas Brookes, Chief Executive of Spirent, reiterated the comment made when
the sale was announced:

'The divestment of our Sensing Solutions business is the next step in our
strategy to focus on communications activities. We believe that the Sensing
Solutions business faces a promising future under its new owners who can
provide strong manufacturing and marketing resources to achieve its potential.'

                                   - ends -                                    

Enquiries:

Nicholas Brookes, Chief Executive Spirent plc [phone]

Eric Hutchinson, Finance Director

Jon Coles/Rupert Young Brunswick (London) [phone]

Background note:

Spirent plc is an international network technology company providing
state-of-the-art solutions with a focus on high growth, high margin activities.
Our Communications group unites leading edge performance analysis technology
with network operations expertise, enabling customers to accelerate the
development, deployment and assurance of next generation network equipment and
services worldwide. 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 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.
You can identify these statements by their use of words such as 'will',
'anticipate', 'estimate', 'expect', 'project', 'intend', 'plan', 'should',
'may', 'assume' and other similar words. You should not place undue reliance on
our 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. Such factors
include: aggressive competition; our ability to develop and commercialise new
products and services; risks relating to the acquisition or sale of businesses;
our reliance on third party manufacturers and suppliers; our exposure to
liabilities for product defects; our reliance on proprietary technology; our
ability to grow in e-commerce; our ability to attract and retain qualified
personnel; risks of doing business internationally; and risks of downturns in
the industries in which we participate; and other risks described from time to
time in Spirent plc's Securities and Exchange Commission periodic reports and
filings. We undertake no obligation to update our forward-looking statements,
whether as a result of new information, future events or otherwise.