Rule 8.3 - CENTRICA PLC

Rule 8.3 - CENTRICA PLC

INVESCO Limited

` FORM 8.3

DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE

(Rule 8.3 of the City Code on Takeovers and Mergers)

1. KEY INFORMATION –

Name of person dealing (Note 1)	INVESCO LIMITED
Company dealt in	CENTRICA PLC
Class of relevant security to which the dealings being disclosed relate (Note 2)	ORDINARY 6.17284p SHARES
Date of dealing	05 DECEMBER 2008

2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3)

Â	Long		Short
Â	Number	(%)	Number	(%)
(1) Relevant securities	155,984,270	4.19%	Â	Â
(2) Derivatives (other than options)	Â	Â	Â	Â
(3) Options and agreements to purchase/sell	Â	Â	Â	Â
Total	155,984,270	4.19%	Â	Â

(b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3)

Class of relevant security:	Â	Long			Â	Short
Â		Number	Â	(%)		Number	Â	(%)
(1) Relevant securities		Â		Â		Â		Â
(2) Derivatives (other than options)		Â		Â		Â		Â
(3) Options and agreements to purchase/sell		Â		Â		Â		Â
Total		Â		Â		Â		Â

(c) Rights to subscribe (Note 3)

Class of relevant security:

Details

3. DEALINGS (Note 4)

(a) Purchases and sales

Purchase/sale	Â	Number of securities	Â	Price per unit (Note 5)
Purchase (ADR Ratio 10:1)		5		13.20 USD
Purchase (ADR Ratio 10:1)		267		13.35 USD
Purchase (ADR Ratio 10:1)		36		13.39 USD
Purchase (ADR Ratio 10:1)		26		13.50 USD
Purchase (ADR Ratio 10:1)		17		13.80 USD
Purchase (ADR Ratio 10:1)		17		13.90 USD
Sale (ADR Ratio 10:1)		3		12.34 USD
Sale (ADR Ratio 10:1)		1313		12.35 USD
Sale (ADR Ratio 10:1)		13		12.38 USD
Sale (ADR Ratio 10:1)		143		12.83 USD
Sale (ADR Ratio 10:1)		430		12.88 USD
Sale (ADR Ratio 10:1)		173		12.90 USD
Sale (ADR Ratio 10:1)		105		13.20 USD
Sale (ADR Ratio 10:1)		214		13.30 USD
Sale (ADR Ratio 10:1)		20		13.50 USD
Purchase		28,389		2.1036 GBP
Purchase		500,000		2.0686 GBP
Purchase		420,685		2.1121 GBP

(b) Derivatives transactions (other than options)

Product name, e.g. CFD

Long/short (Note 6)

Number of securities (Note 7)

Price per unit (Note 5)

(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying

Product name, e.g. call option

Writing, selling, purchasing, varying etc.

Number of securities to which the option relates (Note 7)

Exercise price

Type, e.g. American, European etc.

Expiry date

Option money paid/received per unit (Note 5)

(ii) Exercising

Product name, e.g. call option

Number of securities

Exercise price per unit (Note 5)

(d) Other dealings (including new securities) (Note 4)

Nature of transaction (Note 8)

Details

Price per unit (if applicable) (Note 5)

4. OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated.

Is a Supplemental Form 8 attached? (Note 9) NO

Date of disclosure	08 DECEMBER 2008
Contact name	ON BEHALF OF INVESCO LIMITED
Telephone number	01491 417404
If a connected EFM, name of offeree/offeror with which connected	Â
If a connected EFM, state nature of connection (Note 10)	Â

Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel’s website at www.thetakeoverpanel.org.uk