Holding(s) in Company

Spirax-Sarco Engineering PLC
23 August 2004


                                   SCHEDULE 10
          
                    NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Name of company

SPIRAX-SARCO ENGINEERING PLC


2. Name of shareholder having a major interest

ARNHOLD AND S. BLEICHROEDER ADVISORS, LLC


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

IN RESPECT OF CLIENTS WHOSE PORTFOLIOS ARE MANAGED BY THE SHAREHOLDERS NAMED IN 
BOX 2 ABOVE


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

SEE BELOW


5. Number of shares / amount of stock acquired

NOT STATED


6. Percentage of issued class

NOT STATED


7. Number of shares / amount of stock disposed

NOT STATED


8. Percentage of issued class

NOT STATED


9. Class of security

ORDINARY


10. Date of transaction

18.08.04


11. Date company informed

19.08.04


12. Total holding following this notification

5,980,397


13. Total percentage holding of issued class following this notification

8.0%    (SHARE CAPITAL 74,899,495)


14. Any additional information




15. Name of contact and telephone number for queries

PETER A. SMITH, TEL. [phone]


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

PETER SMITH


Date of notification

23.08.04


The FSA does not give any express or implied warranty as to the accuracy of this
document or material and does not accept any liability for error or omission.
The FSA is not liable for any damages (including, without limitation, damages
for loss of business or loss of profits) arising in contract, tort or otherwise
from the use of or inability to use this document, or any material contained in
it, or from any action or decision taken as a result of using this document or
any such material.



Letter to Spirax-Sarco Engineering plc
dated August 18, 2004

Mr Smith

Amended Disclosure of Substantial Shareholdings Under the Companies Act of 1985


As of August 18, 2004 Arnhold and S. Bleichroeder Advisers, LLC ('ASBA') held,
in the aggregate, a total of 5,980,397 shares of Spirax-Sarco Engineering, Plc.
Those shares represent 8.0% of the 74,760,000 outstanding shares of the company.

The registered holders of the shares managed by ASBA on August 18, 2004 are
given below.

Arnhold and S. Bleichroeder Diversified International Equity Fund        270,000
City of Hartford Municipal Employees' Retirement Fund                     20,397
Ewing Marion Kauffman Foundation                                          75,000
First Eagle Overseas Fund                                              4,050,000
First Eagle Overseas Variable Fund                                       150,000
Genesee County Employees' Retirement System                               25,000
MacArthur Foundation Trust                                                90,000
Raytheon Pension Fund                                                     75,000
Schlumberger Limited                                                      60,000
SoGen International SICAV                                              1,000,000
Utah Retirement Systems                                                  100,000
United Food and Commercial Workers' Union                                 65,000


If you have any questions, please contact me by telephone, at 212-698-3226, or
by electronic mail at [e-mail].


Sincerely,
Lisa Basile
Compliance



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