Holding in Company

Spirax-Sarco Engineering PLC
11 September 2001

                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

     SPIRAX-SARCO ENGINEERING PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     M & G INVESTMENT MANAGEMENT LTD/PRUDENTIAL PLC

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

     M & G INVESTMENT MANAGEMENT LTD/PRUDENTIAL PLC

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

     SEE LETTER BELOW DATED 10TH SEPTEMBER 2001

5)   Number of shares/amount of stock acquired.


     NOT STATED

6)   (NOT STATED %) of issued Class

7)   Number of shares/amount of stock disposed

     NOT STATED

8)   ( N/A %) of issued Class

     NOT STATED

9)   Class of security

     ORDINARY

10)  Date of transaction

     NOT KNOWN

11)  Date company informed

     10.9.01

12)  Total holding following this notification

     NOT STATED
               
13)  Total percentage holding of issued class following this notification

     NOT STATED

14)  Any additional information

     NO LONGER HAS A NOTIFIABLE INTEREST

15)  Name of contact and telephone number for queries

     GUY STAINER
     MERRILL LYNCH - TEL [phone]

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

P A SMITH

     Date of Notification 10TH SEPTEMBER 2001



Letter to Spirax-Sarco Engineering plc - dated 10 September 2001

Companies Act 1985 (as amended):
Disclosure of Interests in Shares

In accordance with Part VI of the Companies Act 1985 (as amended) (the 'Act'), 
we write to inform you that Prudential plc and all of its subsidiary companies, 
no longer have a notifiable interest in the issued share capital of your 
company:

For the purposes of S210 of the Act, the address for those companies identified 
herein is Laurence Pountney Hill London EC4R 0HH.

Letter from Tom Dowler 
for and on behalf of Prudential plc



            Notifiable Position Report for SPIRAX-SARCO ENG ORD GBP0.25
                              as at 07 September 2001

Percentage holdings are calculated using an issued share capital of 73,819,820 
ORD GBP0.25 shares.

           Registered Holder                                   Holding      %

                                No Records Returned