Holding(s) in Company

Posted 26 March 2008
Invensys PLC
26 March 2008

                TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of                         Invensys plc
existing shares to which voting rights are attached:


2. Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

An acquisition or disposal of financial instruments 
which may result in the acquisition of
shares already issued to which voting rights are attached

An event changing the breakdown of voting rights                                  x

Other (please specify):____________________________________________________


3. Full name of person(s) subject to the notification                          Schroders plc
obligation:


4. Full name of shareholder(s) (if different from 3.):


5. Date of the transaction (and date on which the threshold is                  20/03/2008
crossed or reached if different):


6. Date on which issuer notified:                                               25/03/2008


7. Threshold(s) that is/are crossed or reached:                                  Below 10%


8. Notified details:


A: Voting rights attached to shares

Class/type of       Situation previous to the  Resulting situation after the triggering transaction
shares              Triggering transaction
                    Number of    Number of     Number of     Number of voting rights   % of voting rights
 if possible using  Shares       Voting Rights shares
the ISIN CODE                                                Direct     Indirect       Direct     Indirect
GB00B19DVX61        91,340,807   91,340,807    91,340,807               77,599,450                9.73%






B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting rights
instrument                           Period/ Date              that may be acquired if
                                                               the instrument is
                                                               exercised/ converted.



Total (A+B)

Number of voting rights                           % of voting rights

77,599,450                                                9.73%


9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively
held, if applicable:

Schroder Investment Management Limited                                                    77,213,373 (9.69%)
Schroder Investment Management North America Limited                                         375,000 (0.05%)
Schroder &Co Limited                                                                          11,077 (0.001%)



Proxy Voting:

10. Name of the proxy holder:                                                        N/A

11. Number of voting rights proxy holder will cease to hold:                         N/A

12. Date on which proxy holder will cease to hold voting rights:                     N/A


13. Additional information:                 The Shares referred to in Section 9 are held in portfolios managed
                                            by those firms on a discretionary basis for clients under investment
                                            management agreements.

14. Contact name:                           Steve Devany, Vice President - Communications

15. Contact telephone number:               020 7821 3758










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