Result of Equity Issue

Spirent PLC
8 December 2000


Not for release, publication, duplication or distribution in
or  into  the  United States of America, Canada,  Australia,
Japan,  the Republic of Ireland, France, the Netherlands  or
South Africa.

                              
                         Spirent plc
 COMPLETION OF RIGHTS ISSUE IN CONNECTION WITH
          ACQUISITION OF HEKIMIAN LABORATORIES, INC

The  Board of Spirent plc ('Spirent') is pleased to announce
that  by  3.00 p.m. on 7 December 2000, the latest time  and
date for acceptances, valid acceptances had been received in
respect of 121,093,145 new Ordinary Shares of 3 1/3p each  in
Spirent.  This  represents approximately 86%  of  the  total
number  of  new  Ordinary Shares to  be  issued  by  Spirent
pursuant  to  the  5  for 24 Rights Issue  announced  on  16
November 2000 in connection with the acquisition of Hekimian
Laboratories,  Inc.  Spirent believes that shareholders holding
approximately  9% of  the  issued shares (predominantly US 
shareholders)  were ineligible, under the terms of the 
Rights Issue, to take  up their  rights.   As  a  result, 
of  those  shareholders  who Spirent  believes  were eligible 
to take  up  their  rights, approximately 95% have done so.

In  accordance  with  the arrangements referred  to  in  the
circular to shareholders dated 16 November 2000, subscribers
have today been procured at a price of 560p per new Ordinary
Share   for  those  new  Ordinary  Shares  for  which  valid
acceptances  were  not received and rights  attributable  to
certain  overseas  shareholders.  The net proceeds  of  such
subscriptions, after deduction of the Rights Issue Price  of
375p  per  new Ordinary Share and the expenses of  procuring
such  subscriptions,  will be paid, in accordance  with  the
terms  of the Rights Issue, to the persons entitled thereto,
except  that individual amounts of less than £3.00  will  be
retained for the benefit of Spirent.

Sub-underwriters  will  accordingly  not  be   required   to
subscribe for any new Ordinary Shares.

The  latest time for registering renunciations of fully-paid
allotment letters is 3.00 p.m. on 21 December 2000.   It  is
expected   that  definitive  share  certificates   will   be
despatched by 8 January 2001.

The  Rights Issue was underwritten by N M Rothschild &  Sons
Limited, Schroder Salomon Smith Barney and Cazenove & Co and
the  brokers  to the issue were Cazenove & Co  and  Schroder
Salomon Smith Barney.


For further information please contact:

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

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.  It is a world  leader  in
advanced  telecommunications  testing  systems  and  network
products.

Spirent  is  a  FTSE 100 company quoted on the London  Stock
Exchange (ticker SPT) in the Information Technology Hardware
sector.   The Company operates a Level 1 American Depository
Receipt  programme (ticker: SPNUY; CUSIP number: 84856M100).
For information, contact Brian Heston, The Bank of New York,
American  Depositary Receipts, 101 Barclay St, 22 West,  New
York, NY10286.  Phone: [phone],  Fax: [phone].
e-mail: [e-mail]  web site: www.adrbny.com.

The content of this announcement, which has been prepared by
and  is  the sole responsibility of the directors of Spirent
plc, has been approved by N M Rothschild & Sons Limited  and
Schroder Salomon Smith Barney, which are regulated in the UK
by  The  Securities and Futures Authority Limited,  for  the
purposes of Section 57 of the Financial Services Act 1986.

N M Rothschild & Sons Limited, Schroder Salomon Smith Barney
and Cazenove & Co are acting for Spirent plc and no one else
in connection with the Rights Issue and Acquisition and will
not  be  responsible to anyone other than  Spirent  plc  for
providing the protections afforded to their customers or for
providing  advice  in  relation  to  the  Rights  Issue  and
Acquisition.

The  contents  of  this press release do not  constitute  an
offer or invitation to acquire shares in Spirent plc.