Notice of Results

Spirent PLC
18 January 2002

                                                              18 January 2002



                                 SPIRENT PLC
                     NOTIFICATION OF PRELIMINARY RESULTS

Spirent plc, the international network technology company, will announce its
preliminary results for the year ended 31 December 2001, on Wednesday 20
February, 2002.

Nicholas Brookes (Chief Executive) and Eric Hutchinson (Finance Director) will
host the results presentation on that day, a recording of which will be
available on the Spirent plc website (www.spirent.com/investors) from 15.00
London time (10.00 EST) until 27 February.

They will also hold a results conference call at 16.00 London time (11.00 EST)
on 20 February. This may be accessed by dialling [phone], or in
the US [phone], and quoting 'Spirent'.

A recording of the results presentation will be available until 27 February by
dialling Freephone 0500 637 880 (within the UK only) or [phone]
quoting access code 645322. In the US, the recording is available on (303) 804
1855, quoting access code 14 53 211.

                                 - ends -

Background note:

Spirent plc is an international network technology company providing state-of-
the-art solutions with a focus on high growth 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.