Holding(s) in Company

Posted 05 March 2007
Invensys PLC
05 March 2007

                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                                                      (X)

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

An event changing the breakdown of voting rights                                                (n/a)

Other (please specify):____________________________________________________                     (n/a)

3. Full name of person(s) subject to the notification                Brandes Investment Partners, L.P.
obligation:

4. Full name of shareholder(s) (if different from 3.):             Various clients of Brandes Investment
                                                                              Partners, L.P.

5. Date of the transaction (and date on which the threshold is                 March 1, 2007
crossed or reached if different):

6. Date on which issuer notified:                                              March 2, 2007

7. Threshold(s) that is/are crossed or reached:                                     5%

8. Notified details:


A: Voting rights attached to shares

Class/type of     Situation previous to    Resulting situation after the triggering transaction
shares            the 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 0.10 each 35,824,850   5.82%       NONE          NONE         27,660,414      NONE       4.79%
(ISIN CODE US     ordinary                                            ordinary shares
4612042089)       shares and                                          and 10,503,374
                  10,494,868                                          ADR
                  ADR


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

  27,660,414 ordinary shares and 10,503,374 ADR                      4.79%


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






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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