Holding(s) in Company

Invensys PLC
29 April 2008


TR-1:          Notifications of Major Interests in Shares


1:       Identity of the issuer or the underlying issuer   Invensys plc
of existing shares to which voting rights are attached:
2:       Reason for notification (yes/no)
An acquisition or disposal of voting rights                                                    yes
An acquisition or disposal of financial instruments which may result in the acquisition of     x
shares already issued to which voting rights are attached
An event changing the breakdown of voting rights                                               x
Other (please specify):                                                                        x

3:       Full name of person(s) subject to notification    Standard Life Investments Ltd
obligation:
4:       Full name of shareholder(s) (if different from    Vidacos Nominees
3):
5:       Date of transaction (and date on which the        25 April 2008
threshold is crossed or reached if different):
6:       Date on which issuer notified:                    28 April 2008
7:       Threshold(s) that is/are crossed or reached:      18%


8:       Notified Details
A:      Voting rights attached to shares

Class/type of share  If possible use ISIN code       GB00B19DVX61

Situation previous to the triggering transaction

Number of shares                                     Number of voting rights
144,806,451                                          144,806,451

Resulting situation after the triggering transaction

Number of shares           Number of voting rights                              Percentage of
                                                                                voting rights
                           Direct                    Indirect                   Direct        Indirect
143,054,507                77,405,231                65,649,276                 9.711%        8.236%

B:     Financial Instruments

Resulting situation after the triggering transaction

Type of financial     Expiration date      Exercise/ conversion  No. of voting rights  Percentage of voting
instrument                                 period/date           that may be acquired  rights
                                                                 (if the instrument
                                                                 exercised/converted)


Total (A+B)

Number of voting rights                              Percentage of voting rights
143,054,507                                          17.946%


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

Proxy Voting:

10:  Name of proxy holder:
11:  Number of voting rights proxy holder will
cease to hold:
12:  Date on which proxy holder will cease to hold
voting rights:

13:  Additional information:
14:  Contact name:                         Steve Devany
                                           Vice President - Communications
15:  Contact telephone number:             020 7821 3758




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