RNSArticle

TR-1: NOTIFICATION OF MAJOR INTEREST 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			Yes
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached.
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):
3. Full name of person(s) subject to the notification obligation:	Legal & General Group Plc (L&G)
4. Full name of shareholder(s) (if different from 3.):	Legal & General Assurance (Pensions Management) Limited (PMC)
5. Date of the transaction and date on which the threshold is crossed or reached:	27 April 2010
6. Date on which issuer notified:	28 April 2010
7. Threshold(s) that is/are crossed or reached:	L&G (From 4% to 5%)

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

Number
of shares

Number of voting
rights

% of voting rights

Direct

Indirect

Direct

Indirect

Ordinary 10p

36,348,849

(As on 12/02/2010)

40,681,856

5.03%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Expiration
date

Exercise/
Conversion Period

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

% of voting
rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise price

Expiration date

Exercise/
Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

40,681,856

5.03%

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

Legal & General Group Plc (Direct and Indirect) (Group) ( 46,466,758 - 5.75%= Total Position)
Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct and Indirect) ( 46,466,758 - 5.75%= Total Position)
Legal & General Investment Management Limited (Indirect) (LGIM) (46,466,758 - 5.75%= Total Position)
Legal & General Group Plc (Direct) (L&G) ( 40,681,856 - 5.03%=LGAS, LGPL & PMC)
Legal & General Investment Management (Holdings) Limited (Direct) (LGIMHD) ( 26,966,983 - 3.33%= PMC)	Legal & General Insurance Holdings Limited (Direct) (LGIH)
Legal & General Assurance (Pensions Management) Limited (PMC) ( 26,966,983 - 3.33%= PMC)	Legal & General Assurance Society Limited (LGAS & LGPL)
	Legal & General Pensions Limited (Direct) (LGPL)

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:

Notification using the total voting rights figure of 807,520,867

14. Contact name:

Steve Devany, Head of Corporate Communications

15. Contact telephone number:

020 7821 3758

Holding(s) in Company