Holding(s) in Company

Posted 12 September 2007
Invensys PLC
12 September 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:
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            10 September 2007
crossed or reached if different):
6. Date on which issuer notified:                                         12 September 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 the   Resulting situation after the triggering transaction
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        Below 5%     Below 5%       40,082,281      40,082,281               5.03%


B: Financial Instruments
Resulting situation after the triggering transaction
 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
40,082,281                                         5.03%











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)




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

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





Notifitable Position Report for INVENSYS ORD GBP 0.10 as at 10 September 2007

Percentage holdings are calculated using as issued share capital of 796,392,742
ORD 0.10 shares.



---------
                                                        HOLDING             %
PRUDENTIAL PLC                                           40,082,281        5.03

REGISTERED HOLDER
JP MORGAN NOMINEES                                          103,113
MAGIM HSBC GIS NOM(UK) SALI                                 330,336
NORTRUST NOMINEE LTD A/C MHF01                              173,302
NORTRUST NOMINEE LTD A/C MHJ01                            1,661,106
NORTRUST NOMINEE LIMITED A/C MKB01                        1,476,529
NORTRUST NOMINEE LIMITED A/C MKK01                        9,098,809
NORTRUST NOMS LIMITED                                       168,630
NORTRUST NOMS LTD A/C PUF01                                 462,425
NORTRUST NOMS LIMITED A/C PUR01                           5,508,899
PRUCLT HSBC GIS NOM(UK) PAC AC                           18,478,877
PRUCLT HSBC GIS NOM(UK) PPL AC                            1,450,824
PRUCLT HSBC GIS NOM(UK)EQBF AC                              149,856
PRUCLT HSBC GIS NOM(UK)MNBF AC                              192,071
PRUCLT HASB GIS NOM(UK)PENE AC                              827,474



                                                        HOLDING            %
M & G GROUP LIMITED                                     39,979,168         5.03

REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                330,366
NORTRUST NOMINEE LIMITED A/C MHF01                         173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                       1,661,106
NORTRUST NOMINEE LIMITED A/C MKB01                       1,476,529
NORTRUST NOMINEE LIMITED A/C MKK01                       9,098,809
NORTRUST NOMS LIMITED                                      168,630
NORTRUST NOMS LIMITED A/C PUF01                            462,425
NORTURST NOMS LIMITED PUR01                              5,508,899
PRUCLT HSBC GIS NOM(UK) PAC AC                          18,478,877
PRUCLT HABC GIB NOM (UK) PPL AC                          1,450,824
PRUCLT HASB GIS NOM (UK)EQBF AC                            149,856
PRUCLT HSBC GIS NOM(UK) MNBF AC                            192,071
PRUCLT HSBC GIS NOM(UK) PENE AC                            827,474






M&G LIMITED                                                  HOLDING            %
                                                             39,979,168        5.03
REGISTERED HOLDER
MAGIM HSBC GIS NOM(UK) SALI                                     330,366
NORTRUST NOMINEE LIMITED A/C MHF01                              173,302
NORTRUST NOMINEE LIMITED A/C MHJ01                            1,661,106
NORTRUST NOMINEE LIMITED A/C MKB01                            1,476,529
NORTRUST NOMINEE LIMITED A/C MKK01                            9,098,809
NORTRUST NOMS LIMITED                                           168,630
NORTRUST NOMS LIMITED A/C PUF01                                 462,425
NORTURST NOMS LIMITED PUR01                                   5,508,899
PRUCLT HSBC GIS NOM(UK) PAC AC                               18,478,877
PRUCLT HABC GIB NOM (UK) PPL AC                               1,450,824
PRUCLT HASB GIS NOM (UK)EQBF AC                                 149,856
PRUCLT HSBC GIS NOM(UK) MNBF AC                                 192,071
PRUCLT HSBC GIS NOM(UK) PENE AC                                 827,474




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