Holding(s) in Company

Spirax-Sarco Engineering PLC
12 January 2006


                                   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 11.1.06



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


11.01.06



12. Total holding following this notification


2,531,908



13. Total percentage holding of issued class following this notification


3.29% (share capital 76,956,907)



14. Any additional information






15. Name of contact and telephone number for queries


MRS F RICKETTS - 01242 521361



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


FAY RICKETTS



Date of notification


12.1.06



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 11 January, 2006


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                                        27,086
HSBC Global Custody Nominee (UK) Ltd A/c 775245                                       230,431
HSBC Global Custody Nominee (UK) Ltd A/c 357206                                     1,775,961
HSBC Global Custody Nominee (UK) Ltd A/c 866203                                       130,187
HSBC Global Custody Nominee (UK) Ltd A/c 969995                                       174,468
HSBC Global Custody Nominee (UK) Ltd A/c 978777                                        83,280
HSBC Global Custody Nominee (UK) Ltd A/c 360509                                       110,495
                                                                                    2,531,908     3.30%



We currently have a notifiable interest in 2,531,908 Ordinary 25p shares which
we understand represents 3.30% of that class of your share capital calculated on
an issued share capital of 76,721,507 Ordinary 25p 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 Lewis
Authorised Signatory

Helen Tasker
Authorised Signatory



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