Holding(s) in Company

Posted 28 November 2007
Invensys PLC
28 November 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
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): A Purchase of shares has caused subsidiaries of Prudential plc to    X
cross 3% triggering this notification.
3. Full name of person(s) subject to the notification             Prudential plc group of companies
obligation(i):
4. Full name of shareholder(s) (if different from 3.):                  See attached schedule
5. Date of the transaction (and date on which the threshold is             26 November 2007
crossed or reached if different)(ii):
6. Date on which issuer notified:                                          28 November 2007
7. Threshold(s) that is/are crossed or reached:                              See item 13
8. Notified details:










A: Voting rights attached to shares
Class/type of       Situation previous to the   Resulting situation after the triggering transaction(iii)
shares              Triggering transaction
                     Number of     Number of       Number of    Number of voting rights     % of voting
(if possible using     Shares    Voting Rights      shares                                    rights
the ISIN CODE)                                      Direct          Direct     Indirect   Direct  Indirect
GB00B19DVX61        54,551,369   54,551,369     54,792,191      54,792,191               6.87%


B: Financial Instruments
Resulting situation after the triggering transaction xii
 Type of financial   Expiration date   Exercise/ Conversion     Number of voting rights     % of voting
     instrument                            Period/ Date         that may be acquired if        rights
                                                                   the instrument is
                                                                 exercised/ converted.
        N/A          N/A                        N/A            N/A                        N/A


Total (A+B)
Number of voting rights                            % of voting rights
54,792,191                                         6.87%











9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively
held, if applicable:
Prudential plc (parent Company)

M&G Group Limited (wholly owned subsidiary of Prudential plc)

M&G Limited (wholly owned subsidiary of M&G Group Limited)

M&G Investment Management Limited (wholly owned subsidiary of M&G Limited)

The Prudential Assurance Company Limited (a wholly owned subsidary of Prudential plc)




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:                  As per 5.1.2, the non-exempt holdings for Prudential plc have
                                             crossed 4% triggering this notification
14. Contact name:                            Steve Devany

                                             Head of Corporate Communications
15. Contact telephone number:                0207 821 3758





--------------------------


Notifiable Position Report for INVENSYS ORD GBP 0.10 as at 17 October 2007

Percentage holdings are calculated using an issued share capital of 796,798,875
ORD 0.10 shares.
---------                                            HOLDING        % Total Notification of
                                                                            Interests
PRUDENTIAL PLC                                           54,792,191           6.87

REGISTERED HOLDER
JP MORGAN NOMINEES                                          529,422
MAGIM HSBC GIS NOM(UK) SALI                                 371,607
NORTRUST NOMINEE LTD A/C MHF01                              173,302
NORTRUST NOMINEE LTD A/C MHJ01                            2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                        2,483,199
NORTRUST NOMINEE LIMITED A/C MKK01                       11,000,000
NORTRUST NOMS LIMITED                                       189,736
NORTRUST NOMS LTD A/C PUF01                                 490,229
NORTRUST NOMS LIMITED A/C PUI01                              43,522
NORTRUST NOMS LIMITED A/C PUR01                           6,116,882
PRUCLT HSBC GIS NOM(UK) PAC AC                           26,085,696
PRUCLT HSBC GIS NOM(UK) PPL AC                            3,862,742
PRUCLT HSBC GIS NOM(UK)EQBF AC                              154,332
PRUCLT HSBC GIS NOM(UK)MNBF AC                              212,923
PRUCLT HASB GIS NOM(UK)PENE AC                              842,487



                                                     HOLDING       % Total Notification of
                                                                           Interests
M & G GROUP LIMITED                                    54,262,769            6.80

REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                               371,607
NORTRUST NOMINEE LIMITED A/C MHF01                        173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                      2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                      2,483,199
NORTRUST NOMINEE LIMITED A/C MKK01                     11,000,000
NORTRUST NOMS LIMITED                                     189,736
NORTRUST NOMS LIMITED A/C PUF01                           490,229
NORTRUST NOMS LIMITED A/C PUI01                            43,522
NORTURST NOMS LIMITED PUR01                             6,116,882
PRUCLT HSBC GIS NOM(UK) PAC AC                         26,085,696
PRUCLT HABC GIB NOM (UK) PPL AC                         3,862,742
PRUCLT HASB GIS NOM (UK)EQBF AC                           154,332
PRUCLT HSBC GIS NOM(UK) MNBF AC                           212,923
PRUCLT HSBC GIS NOM(UK) PENE AC                           842,487


M&G INVESTMENT MANAGEMENT                                 HOLDING       % Total Notification
LIMITED                                                                     of  Interests
                                                             54,089,467      6.78
REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                     371,607
NORTRUST NOMINEE LIMITED A/C MHJ01                            2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                            2,483,199
NORTRUST NOMINEE LIMITED A/C MKK01                           11,000,000
NORTRUST NOMS LIMITED                                           189,736
NORTRUST NOMS LIMITED A/C PUF01                                 490,229
NORTRUST NOMS LIMITED A/C PUI01                                  43,522
NORTURST NOMS LIMITED PUR01                                   6,116,882
PRUCLT HSBC GIS NOM(UK) PAC AC                               26,085,696
PRUCLT HABC GIB NOM (UK) PPL AC                               3,862,742
PRUCLT HASB GIS NOM (UK)EQBF AC                                 154,332
PRUCLT HSBC GIS NOM(UK) MNBF AC                                 212,923
PRUCLT HSBC GIS NOM(UK) PENE AC                                 842,487



M&G LIMITED                                               HOLDING      % Total Notification
                                                                           of  Interests
                                                            54,262,769       6.80
REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                    371,607
NORTRUST NOMINEE LIMITED A/C MHF01                             173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                           2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                           2,483,199
NORTRUST NOMINEE LIMITED A/C MKK01                          11,000,000
NORTRUST NOMS LIMITED                                          189,736
NORTRUST NOMS LIMITED A/C PUF01                                490,229
NORTRUST NOMS LIMITED A/C PUI01                                 43,522
NORTURST NOMS LIMITED PUR01                                  6,116,882
PRUCLT HSBC GIS NOM(UK) PAC AC                              26,085,696
PRUCLT HABC GIB NOM (UK) PPL AC                              3,862,742
PRUCLT HASB GIS NOM (UK)EQBF AC                                154,332
PRUCLT HSBC GIS NOM(UK) MNBF AC                                212,923
PRUCLT HSBC GIS NOM(UK) PENE AC                                842,487






---------                                            HOLDING        % Total Notification of
                                                                            Interests
The Prudential Assurance                                 30,320,045          3.80
Company Limited

REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                 371,607
PRUCLT HSBC GIS NOM(UK) PAC AC                           26,085,696
PRUCLT HSBC GIS NOM(UK) PPL AC                            3,862,742




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