Holding(s) in Company

Invensys PLC
03 April 2007

                TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing  Invensys plc
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                                                       (X)
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                                                  (  )
Other (please specify):                                                                           (  )
3. Full name of person(s) subject to the notification           Standard Life Investments Ltd
obligation:
4. Full name of shareholder(s) (if different from 3.):          Vidacos Nominees
5. Date of the transaction (and date on which the threshold is  30 March 2007
crossed or reached if different):
6. Date on which issuer notified:                               3 April 2007
7. Threshold(s) that is/are crossed or reached:                 15%
8. Notified details:                                            Standard Life Investments Ltd acquired
                                                                779,104 shares.


A: Voting rights attached to shares
Class/type of     Situation previous to the Resulting situation after the triggering transaction
shares            Triggering transaction

 if possible      Number of    Number of    Number of     Number of voting rights   % of voting rights
using the ISIN    Shares       Voting       shares
CODE                           Rights
                                            Direct        Direct       Indirect     Direct       Indirect

Ord GBP           117,415,764 117,415,764   59,145,065     59,145,065   60,686,498  7%                7%

0.10

GB00B19DVX61


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
119,831,563                                       15%


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


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:
14. Contact name:                           Steve Devany, Vice President - Communications
15. Contact telephone number:               020 7821 3758






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