Blocklisting Interim Review

Invensys PLC
02 February 2007


BLOCKLISTING RETURN

Information provided on this form must be typed or printed electronically.



To:    The FSA


Date:  2 February 2007



1. Name of applicant


Invensys plc



2. Name of scheme


Invensys Savings Related Share Option Scheme



3. Period of return


From      5 August 2006                              To     2 February 2007



4. Balance under scheme from previous return


9,835,174 Ordinary shares of nominal value 1p each



5. The amount by which the block scheme has been increased, if the scheme has
been increased since the date of the last return


n/a



6. Number of securities issued/allotted under scheme during period


8,026 Ordinary shares of nominal value 10p each



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


975,491 Ordinary shares of nominal value 10p each



8. Number and class of securities originally listed and the date of admission


10,000,000 ordinary shares of 1p each, admitted on 21 March 2005



9. Total number of securities in issue at the end of the period


796,230,325 Ordinary shares of nominal value 10p each


Name of contact            Jaime Tham, Assistant Secretary


Address of contact         Invensys plc, Portland House, Bressenden Place, London SW1E 5BF


Telephone number of contact             020 7821 3848





Signed by .........................................


suitably experienced employee for and on behalf of



Name of applicant: Invensys plc


If you knowingly or recklessly give false or misleading information you may be
liable to prosecution.




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