Holding(s) in Company

Posted 09 August 2007
Invensys PLC
09 August 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                                                 (  )


3. Full name of person(s) subject to the notification                Legal & General Group Plc (L&G)
obligation:



4. Full name of shareholder(s) (if different from 3.):             Legal & General Assurance (Pensions
                                                                        Management) Limited (PMC)


5. Date of the transaction and date on which the threshold is                    07/08/07
crossed or reached:


6. Date on which issuer notified:                                               08/08/2007


7. Threshold(s) that is/are crossed or reached:                             From 4% - 5% (L&G)


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          33,586,668             40,794,772     40,794,772              5.12
                 33,586,668
0.10


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
40,794,772                                        5.12


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

Legal & General Group Plc (Direct and Indirect) (Group) (48,113,159 - 
6.04% = Total Position)

Legal & General Investment Management (Holdings) Limited (LGIMH) 
(Direct and Indirect) (48,113,159 - 6.04% = Total Position)

Legal & General Investment Management Limited (Indirect) (LGIM) 
(48,113,159 - 6.04% = Total Position)

                    Legal & General Group Plc (Direct) (L&G) (40,794,772 - 5.12% = LGAS, LGPL & PMC)

Legal & General Investment Management (Holdings) Limited        Legal & General Insurance Holdings Limited (Direct)
(Direct) (LGIMHD) (25,339,056 - 3.18% = PMC)                    (LGIH)

Legal & General Assurance (Pensions Management) Limited         Legal & General Assurance Society Limited  (LGAS & LGPL)
(25,339,056 - 3.18% = PMC)
                                                                Legal & General Pensions Limited (Direct)  (LGPL)


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:                   Notification using the total voting rights figure of 796,384,400

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

15. Contact telephone number:                                          020 7821 3758








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