Holding in Company

Spirent PLC
14 November 2000


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

SPIRENT PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

MR IAIN MILNES

3)   Please state whether notification indicates that it is in respect of 
     holding of the Shareholder named in 2 above or in respect of a 
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18

SHAREHOLDER IN 2 ABOVE

4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

MR IAIN MILNES - 35,009,578

5)   Number of shares/amount of stock acquired.

35,009,578

6)   (5.18%) of issued Class

7)   Number of shares/amount of stock disposed

-

8)   ( N/A %) of issued Class

9)   Class of security

ORDINARY SHARES OF 3 1/3P EACH


10)  Date of transaction

14 NOVEMBER 2000

11)  Date company informed

14 NOVEMBER 2000

12)  Total holding following this notification

35,009,578
               
              
13)  Total percentage holding of issued class following this notification

5.18%

14)  Any additional information

NOTIFICATION IN ACCORDANCE WITH S.198-202 COMPANIES ACT 1985 THAT A SHAREHOLDER
HAS A NOTIFIABLE INTEREST.  THIS NOTIFICATION FOLLOWS THE ACQUISITION OF ZARAK
SYSTEMS INC., OF WHICH MR MILNES WAS A MAJOR SHAREHOLDER.

15)  Name of contact and telephone number for queries

JOSEPHINE GOMM - 01293 767676

16)  Name and signature of authorised company official responsible for 
     making this notification

     Date of Notification ...14 NOVEMBER 2000