Holding(s) in Company

TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Invensys plc

2. Reason for the notification  (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights 

Χ 

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 obligation:

Prudential plc group of companies

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 crossed or reached if different):

12 November 2008

6. Date on which issuer notified:

13 November 2008

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

See item 13

8. Notified details:

A: Voting rights attached to shares

Class/type of shares 

(if possible using the ISIN CODE)

Situation previous to the Triggering transaction 

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights viii

Number of shares

Number of voting rights ix

% of voting rights

Direct

Direct x

Indirect xi

Direct

Indirect

GB00B19DVX61

80,797,205

80,797,205

81,837,018

81,837,018

10.21%

B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period/ Date xiv

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

% of voting rights

81,837,018

10.21%

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

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 subsidiary 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:

M&G Group Limited (wholly owned subsidiary of Prudential plc) and M&G Limited (wholly owned subsidiary of M&G Group Limited) have crossed 10% triggering this notification.

14. Contact name:

Steve Devany

15. Contact telephone number:

020 7821 3758

­­­­­­­­­

HOLDING

% Total Notification of Interests

PRUDENTIAL PLC

81,837,018

10.21

REGISTERED HOLDER

JP MORGAN NOMINEES

1,646,356

MAGIM HSBC GIS NOM(UK) SALI

509,430

NORTRUST NOMINEE LTD A/C MHF01

173,302

NORTRUST NOMINEE LTD A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

22,000,000

NORTRUST NOMS LIMITED

277,576

NORTRUST NOMS LTD A/C PUF01

562,022

NORTRUST NOMS LIMITED A/C PUI01

64,310

NORTRUST NOMS LIMITED A/C PUR01

7,913,501

NORTRUST NOMS LIMITED A/C PUS01

39,679

PRUCLT HSBC GIS NOM (UK) PAC AC

36,300,095

PRUCLT HSBC GIS NOM(UK) PPL AC

5,975,507

PRUCLT HSBC GIS NOM(UK) EQBF AC

179,819

PRUCLT HSBC GIS NOM(UK) MNBF AC

255,881

PRUCLT HSBC GIS NOM(UK) PENE AC

1,005,314

STATE STREET NOMS

140,000

HOLDING

% Total Notification of Interests

M & G GROUP LIMITED

80,190,662

10.01

REGISTERED HOLDER

MAGIM HSBC GIS NOM(UK) SALI

509,430

NORTRUST NOMINEE LIMITED A/C MHF01

173,302

NORTRUST NOMINEE LIMITED A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

22,000,000

NORTRUST NOMS LIMITED

277,576

NORTRUST NOMS LIMITED A/C PUF01

562,022

NORTRUST NOMS LIMITED A/C PUI01

64,310

NORTURST NOMS LIMITED PUR01

7,913,501

NORTURST NOMS LIMITED PUS01

39,679

PRUCLT HSBC GIS NOM(UK) PAC AC

36,300,095

PRUCLT HSBC GIB NOM (UK) PPL AC

5,975,507

PRUCLT HSBC GIS NOM (UK)EQBF AC

179,819

PRUCLT HSBC GIS NOM(UK) MNBF AC

255,881

PRUCLT HSBC GIS NOM(UK) PENE AC

1,005,314

STATE STREET NOMS

140,000

M&G INVESTMENT MANAGEMENT LIMITED

HOLDING

% Total Notification of Interests

79,977,681

9.98

REGISTERED HOLDER

MAGIM HSBC GIS NOM(UK) SALI

509,430

NORTRUST NOMINEE LIMITED A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

22,000,000

NORTRUST NOMS LIMITED

277,576

NORTRUST NOMS LIMITED A/C PUF01

562,022

NORTRUST NOMS LIMITED A/C PUI01

64,310

NORTURST NOMS LIMITED PUR01

7,913,501

PRUCLT HSBC GIS NOM(UK) PAC AC

36,300,095

PRUCLT HSBC GIB NOM (UK) PPL AC

5,975,507

PRUCLT HSBC GIS NOM (UK)EQBF AC

179,819

PRUCLT HSBC GIS NOM(UK) MNBF AC

255,881

PRUCLT HSBC GIS NOM(UK) PENE AC

1,005,314

STATE STREET NOMS

140,000

M&G LIMITED

HOLDING

% Total Notification of Interests

80,190,662

10.01

REGISTERED HOLDER

MAGIM HSBC GIS NOM(UK) SALI

509,430

NORTRUST NOMINEE LIMITED A/C MHF01

173,302

NORTRUST NOMINEE LIMITED A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

22,000,000

NORTRUST NOMS LIMITED

277,576

NORTRUST NOMS LIMITED A/C PUF01

562,022

NORTRUST NOMS LIMITED A/C PUI01

64,310

NORTURST NOMS LIMITED PUR01

7,913,501

NORTURST NOMS LIMITED PUS01

39,679

PRUCLT HSBC GIS NOM(UK) PAC AC

36,300,095

PRUCLT HSBC GIB NOM (UK) PPL AC

5,975,507

PRUCLT HSBC GIS NOM (UK)EQBF AC

179,819

PRUCLT HSBC GIS NOM(UK) MNBF AC

255,881

PRUCLT HSBC GIS NOM(UK) PENE AC

1,005,314

STATE STREET NOMS

140,000

­­­­­­­­­

HOLDING

% Total Notification of Interests

The Prudential Assurance Company Limited

42,785,032

5.34

REGISTERED HOLDER

MAGIM HSBC GIS NOM(UK) SALI

509,430

PRUCLT HSBC GIS NOM(UK) PAC AC

36,300,095

PRUCLT HSBC GIS NOM(UK) PPL AC

5,975,507