RNS Number:7443N
Spirax-Sarco Engineering PLC
18 July 2003

                                   SCHEDULE 5

                        BLOCKLISTING SIX MONTHLY RETURN



To: Listing Applications
UK Listing Authority
Financial Services Authority
25, The North Colonnade
Canary Wharf
London, E14 5HS




               Please ensure the entries on this return are typed



1. Name of company


SPIRAX-SARCO ENGINEERING PLC




2. Name of scheme


EXECUTIVE SHARE OPTION SCHEME




3. Period of return:


From      17TH JANUARY 2003                          To     17TH JULY 2003




4. Number and class of shares(s) (amount of stock / debt security) not issued
under scheme


-32,798



5. Number of shares issued / allotted under scheme during period:


49,207



6. Balance under scheme not yet issued / allotted at end of period


417,995



7. Number and class of share(s) (amount of stock / debt securities) originally
listed and the date of admission;


25P ORDINARY SHARES:       121,167 (2.1.03) + 500,000 (27.1.03)



Please confirm total number of shares in issue at the end of the period in order
for us to update our records


74,356,226



Contact for queries


Name             P A SMITH



Address          SPIRAX-SARCO ENGINEERING PLC
                 CHARLTON HOUSE
                 CHELTENHAM
                 GLOS. GL53 8ER


Telephone        01242 521361



Person making the return


Name             P A SMITH



Position         DIRECTOR & COMPANY SECRETARY



Signature



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