Holding(s) in Company

Spirax-Sarco Engineering PLC
17 May 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


THE CAPITAL GROUP COMPANIES, INC.



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 ATTACHED LETTER DATED 14TH MAY 2004 (RECEIVED 17.5.04)



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


NOT KNOWN



11. Date company informed


17.5.04



12. Total holding following this notification


4,478,191



13. Total percentage holding of issued class following this notification


5.98%



14. Any additional information


Share capital at 13.5.04 - 74,836,941



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 A. SMITH



Date of notification


17.5.04



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 14 May 2004



Re: Section 198 Notification

Enclosed is a Section 198 Notification dated 13 May 2004.



Please note that one or more of the affiliates of The Capital Group Companies,
Inc. have made notifications to your company pursuant to Section 198 previously.
For a description of our organization, please visit our Web site at
www.capgroup.com.



For the purposes of this Notification an outstanding share balance of 74,356,224
shares was used to calculate the percentages of holdings of the relevant share
capital which determine the notifiable interest. We believe this outstanding
share balance is current; however, if this number is not accurate, please
contact us as soon as possible so we may make the necessary revisions to this
Notification.



Should you have questions or require additional information, please contact Gina
Martinez or Greg Dickinson at [phone], or send a fax message to (213)
486-9698.  alternatively, you may contact us via E- ail at [e-mail].



Regards,



Vivien Tan
Compliance Associate



Letter to Spirax-Sarco Engineering plc

Dated:  13 May 2004



Section 198 Notification, Notification of Increase


This Notice is given by The Capital Group Companies, Inc. on behalf of its
affiliates, including Capital Research and Management Company and Capital
Guardian Trust Company, pursuant to Section 198 of the Companies Act 1985.


The interest in the relevant share capital indicated below arises by virtue of
holdings attributed to the Companies (see Schedule A). These holdings form part
of funds managed on behalf of investment clients by the Companies.


Share capital to which this relates:

Ordinary Shares (74,356,224 shares outstanding)


Number of shares in which the Companies have an interest:

4,478,191



Name(s) of registered holder(s):

See Schedule B


As of 26 November 2002

Spirax-Sarco Engineering plc


                                                    Number of        Percent of

                                                    Shares          Outstanding


The Capital Group Companies, Inc. ('CG') holdings   4,478,191            6.023%


Holdings by CG Management Companies and Funds:


•       Capital Guardian Trust Company                241,800            0.325%


•       Capital Research and Management Company     4,236,391            5.697%
•       Capital Income Builder                      3,336,391            4.487%



Schedule A





Schedule of holdings in Spirax-Sarco Engineering plc

As of 13 May 2004



Capital Guardian Trust Company


Registered Name                                     Local Shares

State Street Nominees Limited                         9,500

Canary Wharf

27th Floor, 1 Canada Square

London E14 5AF


Chase Nominees Limited                              232,300
Woolgate House
Coleman Street
London EC2P 2HD


TOTAL                                               241,800


Capital Research and Management Company


Registered Name                                     Local Shares

State Street Nominees Ltd                           900,000

Canary Wharf

27th Floor, 1 Canada Square

London E14 5AF


Chase Nominees Limited                           3,336,391

Woolgate House
Coleman street
London EC2P 2HD


TOTAL                                           4,236,391


Schedule B



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