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):

16 April 2009

6. Date on which issuer notified:

17 April 2009

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

89,360,997

89,360,997

88,999,538

88,999,538

11.10%

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

88,999,538

11.10%

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 Investment Management Limited (wholly owned subsidiary of M&G Limited), has gone below a 11% notifiable interest triggering this notification.

14. Contact name:

Steve Devany, Head of Corporate Communications

15. Contact telephone number:

020 7821 3758.

­­­­­­­

HOLDING

% Total Notification of Interests

PRUDENTIAL PLC

88,999,538

11.10

REGISTERED HOLDER

JP MORGAN NOMINEES

768,034

NORTRUST NOMINEE LTD A/C MHF01

181,944

NORTRUST NOMINEE LTD A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

28,000,000

NORTRUST NOMS LIMITED LIMITED A/C MNB01

2,308,451

NORTRUST NOMS LTD A/C MNJ01

267,185

NORTRUST NOMS LIMITED 

259,189

NORTRUST NOMS LIMITED A/C PUF01

582,500

NORTRUST NOMS LIMITED A/C PUI01

70,125

NORTRUST NOMS LIMITED A/C PUR01

8,757,837

NORTRUST NOMS LIMITED A/C PUS01

39,679

PRUCLT HSBC GIS NOM(UK) PAC AC

36,118,184

PRUCLT HSBC GIS NOM(UK) PPL AC

6,712,184

STATE STREET NOMS

140,000

HOLDING

% Total Notification of Interests

M & G GROUP LIMITED

88,231,504

11.00

REGISTERED HOLDER

NORTRUST NOMINEE LTD A/C MHF01

181,944

NORTRUST NOMINEE LTD A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

28,000,000

NORTRUST NOMS LIMITED LIMITED A/C MNB01

2,308,451

NORTRUST NOMS LTD A/C MNJ01

267,185

NORTRUST NOMS LIMITED 

259,189

NORTRUST NOMS LIMITED A/C PUF01

582,500

NORTRUST NOMS LIMITED A/C PUI01

70,125

NORTRUST NOMS LIMITED A/C PUR01

8,757,837

NORTRUST NOMS LIMITED A/C PUS01

39,679

PRUCLT HSBC GIS NOM(UK) PAC AC

36,118,184

PRUCLT HSBC GIS NOM(UK) PPL AC

6,712,184

STATE STREET NOMS

140,000

M&G INVESTMENT MANAGEMENT LIMITED

HOLDING

% Total Notification of Interests

88,009,881

10.98

REGISTERED HOLDER

NORTRUST NOMINEE LTD A/C MHJ01

2,236,112

NORTRUST NOMINEE LTD A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

28,000,000

NORTRUST NOMINEE LIMITED A/C MNB01

2,308,451

NORTRUST NOMS LIMITED A/C MNJ01

267,185

NORTRUST NOMS LIMITED 

259,189

NORTRUST NOMS LIMITED A/C PUF01

582,500

NORTRUST NOMS LIMITED A/C PUI01

70,125

NORTRUST NOMS LIMITED A/C PUR01

8,757,837

PRUCLT HSBC GIS NOM(UK) PAC AC

36,118,184

PRUCLT HSBC GIS NOM(UK) PPL AC

6,712,184

STATE STREET NOMS

140,000

M&G LIMITED

HOLDING

% Total Notification of Interests

88,231,504

11.00

REGISTERED HOLDER

NORTRUST NOMINEE LTD A/C MHF01

181,944

NORTRUST NOMINEE LTD A/C MHJ01

2,236,112

NORTRUST NOMINEE LIMITED A/C MKB01

2,558,114

NORTRUST NOMINEE LIMITED A/C MKK01

28,000,000

NORTRUST NOMS LIMITED A/C MNB01

2,308,451

NORTRUST NOMS LIMITED A/C MNJ01

267,185

NORTRUST NOMS LIMITED

259,189

NORTRUST NOMS LIMITED A/C PUF01

582,500

NORTRUST NOMS LIMITED A/C PUI01

70,125

NORTRUST NOMS LIMITED A/C PUR01

8,757,837

NORTRUST NOMS LIMITED A/C PUS01

39,679

PRUCLT HSBC GIS NOM(UK) PAC AC

36,118,184

PRUCLT HSBC GIS NOM(UK) PPL AC

6,712,184

STATE STREET NOMS

140,000

­­­­­­­

HOLDING

% Total Notification of Interests

The Prudential Assurance Company Limited

42,830,368

5.34

REGISTERED HOLDER

PRUCLT HSBC GIS NOM(UK) PAC AC

36,118,184

PRUCLT HSBC GIS NOM(UK) PPL AC

6,712,184