Holding(s) in Company

Spirax-Sarco Engineering PLC
18 April 2005

                                   SCHEDULE 10

                    NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Name of company

SPIRAX-SARCO ENGINEERING PLC

2. Name of shareholder having a major interest

LEGAL & GENERAL INVESTMENT MANAGEMENT

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 15.4.05

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 stated

11. Date company informed

15.4.05

12. Total holding following this notification

3,755,168

13. Total percentage holding of issued class following this notification

4.95% (share capital 75,881,131)

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

FAY RICKETTS

Date of notification

18.4.05

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 15 April 2005

Disclosure of Interest in shares Under Section 198

Please find below the details of the notifiable interest of Legal & General
Group Plc and/or its subsidiaries in the relevant share capital of your company:

Material Interest


HSBC Global Custody Nominee (UK) Ltd A/c 914945              28,340
HSBC Global Custody Nominee (UK) Ltd A/c 923363              14,080
HSBC Global Custody Nominee (UK) Ltd A/c 775237              37,266
HSBC Global Custody Nominee (UK) Ltd A/c 942229              82,769
HSBC Global Custody Nominee (UK) Ltd A/c 942217              82,723
HSBC Global Custody Nominee (UK) Ltd A/c 942205              37,661
HSBC Global Custody Nominee (UK) Ltd A/c 942175              83,758
HSBC Global Custody Nominee (UK) Ltd A/c 942187              82,882
HSBC Global Custody Nominee (UK) Ltd A/c 775245             293,162
HSBC Global Custody Nominee (UK) Ltd A/c 130007              62,458
HSBC Global Custody Nominee (UK) Ltd A/c 357206           1,982,853
HSBC Global Custody Nominee (UK) Ltd A/c 866203             108,489
HSBC Global Custody Nominee (UK) Ltd A/c 754612              51,901
HSBC Global Custody Nominee (UK) Ltd A/c 361602               2,023
HSBC Global Custody Nominee (UK) Ltd A/c 282605             675,697
HSBC Global Custody Nominee (UK) Ltd A/c 360509             110,495
HSBC Global Custody Nominee (UK) Ltd A/c 766793               6,777
HSBC Global Custody Nominee (UK) Ltd A/c 824434               1,793
HSBC Global Custody Nominee (UK) Ltd A/c 924422              10,041
                                                          3,755,168     4.99%

We currently have a notifiable interest in 3,755,168 Ordinary 25p shares which
we understand represents 4.99% of that class of your share capital calculated on
an issued share capital of 75,192,711 ordinary shares.

Should you wish to discuss any aspect of this notification, please do not
hesitate to contact Helen Lewis on 020 7528 6742.

Yours faithfully

Helen Tasker
Authorised Signatory

Helen Lewis
Authorised Signatory




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