Holding(s) in Company

Spirax-Sarco Engineering PLC
15 December 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

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 10TH DECEMBER 2004


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

13.12.04


12. Total holding following this notification

3,836,272 (share capital 75,201,211)


13. Total percentage holding of issued class following this notification

5.10%


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

15.12.04


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 10 December 2004



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 775237                 37,266
HSBC Global Custody Nominee (UK) Ltd A/c 942199                 40,172
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 770286                 31,383
HSBC Global Custody Nominee (UK) Ltd A/c 357206              2,075,676
HSBC Global Custody Nominee (UK) Ltd A/c 866203                105,489
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                 97,995
HSBC Global Custody Nominee (UK) Ltd A/c 766793                  6,777
HSBC Global Custody Nominee (UK) Ltd A/c 924422                 10,041
                                                             3,836,272     5.10%

We currently have a notifiable interest in 3,836,272 Ordinary 25p shares which
we understand represents 5.10% 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

Lee Toms
Authorised Signatory




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