Holding(s) in Company

Posted 27 February 2007
Invensys PLC
27 February 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):      n/a see
                                                                                additional
                                                                                information


An acquisition or disposal of voting rights                                                     (n/a)


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)




3. Full name of person(s) subject to the notification               Legal & General Group Plc (Group)
obligation:
                                                                  Legal & General Investment Management
                                                                              Limited (LGIM)

                                                                     Legal & General Group Plc (L&G)


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                      n/a
crossed or reached:


6. Date on which issuer notified:                                                26/02/07


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

                                                                             Above 5% (LGIM)

                                                                              Above 3% (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          32,162,552   4.03%    32,312,386     32,312,386   7,692,541    4.058      0.966

0.10             (under S-198 on 
                 18/01/2007)




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

40,004,927                                        5.02%




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) (40,004,927-5.02% =
Total Position)


Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct and
Indirect)  (40,004,927-5.02% = Total Position)


Legal & General Investment Management Limited (Indirect) (LGIM)
(40,004,927-5.02% = Total Position)


                     Legal & General Group Plc (Direct) (L&G) (32,312,386-4.05% = LGAS, LGPL & PMC)


Legal & General Investment Management (Holdings) Limited        Legal & General Insurance Holdings Limited (Direct)
(Direct) (LGIMHD) (24,566,857-3.08% = PMC)                      (LGIH)


Legal & General Assurance (Pensions Management) Limited  (PMC)  Legal & General Assurance Society Limited  (LGAS & LGPL)
(24,566,857-3.08% = 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

                                                                        796,230,325

                                                          First notification under DTR Sourcebook

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


15. Contact telephone number:                                          020 7821 3758





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