Holding(s) in Company

Invensys PLC
24 January 2008


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): A Purchase of shares has caused subsidiaries of Prudential plc to
cross 4% triggering this notification.

3. Full name of person(s) subject to the notification             Standard Life Investments Limited
obligation(i):

4. Full name of shareholder(s) (if different from 3.):                     Vidacos Nominees

5. Date of the transaction (and date on which the threshold is             22 January 2008
crossed or reached if different)(ii):

6. Date on which issuer notified:                                          23 January 2008

7. Threshold(s) that is/are crossed or reached:                                  18%

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 rights
(if possible using     Shares    Voting Rights      shares
the ISIN CODE)                                      Direct        Direct     Indirect   Direct   Indirect
GB00B19DVX61        136,122,981  136,122,981    144,806,451     75,031,376  69,775,075   9.415%   8.755%



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
144,806,451                                        18.170%











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



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