Holding(s) in Company

Posted 22 October 2007
Invensys PLC
22 October 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             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             17 October 2007
crossed or reached if different)(ii):
6. Date on which issuer notified:                                          19 October 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        43,169,990   43,169,990     43,727,407      43,727,407               5.49%


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
43,727,407                                         5.49%











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)






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:                  The 3% threshold for non-exempt holdings with Prudential plc has
                                             been crossed 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                                           43,727,407                      5.49

REGISTERED HOLDER
JP MORGAN NOMINEES                                          431,602
MAGIM HSBC GIS NOM(UK) SALI                                 330,366
NORTRUST NOMINEE LTD A/C MHF01                              173,302
NORTRUST NOMINEE LTD A/C MHJ01                            2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                        1,693,944
NORTRUST NOMINEE LIMITED A/C MKK01                        9,503,327
NORTRUST NOMS LIMITED                                       162,862
NORTRUST NOMS LTD A/C PUF01                                 462,425
NORTRUST NOMS LIMITED A/C PUI01                              33,424
NORTRUST NOMS LIMITED A/C PUR01                           5,356,616
PRUCLT HSBC GIS NOM(UK) PAC AC                           20,125,696
PRUCLT HSBC GIS NOM(UK) PPL AC                            2,053,187
PRUCLT HSBC GIS NOM(UK)EQBF AC                              149,856
PRUCLT HSBC GIS NOM(UK)MNBF AC                              187,214
PRUCLT HASB GIS NOM(UK)PENE AC                              827,474



                                                     HOLDING       % Total Notification of
                                                                           Interests
M & G GROUP LIMITED                                    43,295,805                        5.43

REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                               330,366
NORTRUST NOMINEE LIMITED A/C MHF01                        173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                      2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                      1,693,944
NORTRUST NOMINEE LIMITED A/C MKK01                      9,503,327
NORTRUST NOMS LIMITED                                     162,862
NORTRUST NOMS LIMITED A/C PUF01                           462,425
NORTRUST NOMS LIMITED A/C PUI01                            33,424
NORTURST NOMS LIMITED PUR01                             5,356,616
PRUCLT HSBC GIS NOM(UK) PAC AC                         20,125,696
PRUCLT HABC GIB NOM (UK) PPL AC                         2,053,187
PRUCLT HASB GIS NOM (UK)EQBF AC                           149,856
PRUCLT HSBC GIS NOM(UK) MNBF AC                           187,214
PRUCLT HSBC GIS NOM(UK) PENE AC                           827,474


M&G INVESTMENT MANAGEMENT                                 HOLDING       % Total Notification
LIMITED                                                                     of  Interests
                                                             43,122,503                  5.41
REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                     330,366
NORTRUST NOMINEE LIMITED A/C MHJ01                            2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                            1,693,944
NORTRUST NOMINEE LIMITED A/C MKK01                            9,503,327
NORTRUST NOMS LIMITED                                           162,862
NORTRUST NOMS LIMITED A/C PUF01                                 462,425
NORTRUST NOMS LIMITED A/C PUI01                                  33,424
NORTURST NOMS LIMITED PUR01                                   5,356,616
PRUCLT HSBC GIS NOM(UK) PAC AC                               20,125,696
PRUCLT HABC GIB NOM (UK) PPL AC                               2,053,187
PRUCLT HASB GIS NOM (UK)EQBF AC                                 149,856
PRUCLT HSBC GIS NOM(UK) MNBF AC                                 187,214
PRUCLT HSBC GIS NOM(UK) PENE AC                                 827,474



M&G LIMITED                                               HOLDING      % Total Notification
                                                                           of  Interests
                                                            43,295,805                  5.43
REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                    330,366
NORTRUST NOMINEE LIMITED A/C MHF01                             173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                           2,236,112
NORTRUST NOMINEE LIMITED A/C MKB01                           1,693,944
NORTRUST NOMINEE LIMITED A/C MKK01                           9,503,327
NORTRUST NOMS LIMITED                                          162,862
NORTRUST NOMS LIMITED A/C PUF01                                462,425
NORTRUST NOMS LIMITED A/C PUI01                                 33,424
NORTURST NOMS LIMITED PUR01                                  5,356,616
PRUCLT HSBC GIS NOM(UK) PAC AC                              20,125,696
PRUCLT HABC GIB NOM (UK) PPL AC                              2,053,187
PRUCLT HASB GIS NOM (UK)EQBF AC                                149,856
PRUCLT HSBC GIS NOM(UK) MNBF AC                                187,214
PRUCLT HSBC GIS NOM(UK) PENE AC                                827,474











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