Rule 8.3 - CENTRICA

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        BARCLAYS PLC
(Note 1)
Company dealt in              CENTRICA
Class of relevant security    ORD GBP0.061728395
to which the dealings being
disclosed relate (Note 2)
Date of dealing               08 August 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)

                            Long                     Short

                      Number       (%)         Number       (%)

(1) Relevant     225,334,651      6.07%     8,433,939      0.23%
securities
(2) Derivatives   18,269,029      0.49%     2,813,243      0.08%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total            243,603,680      6.57%    11,247,182      0.30%

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

Class of                    Long                     Short
relevant
security:

                  Number              (%)   Number              (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


  (c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

  (a)  Purchases and sales

Purchase/sale Number of Securities Price per unit
                                    (GBP)
Purchase      106,636               3.1075
Purchase      534                   Transfer
Purchase      800                   3.0600
Purchase      2,332                 3.0280
Purchase      38,780                3.1041
Purchase      3,604                 3.1075
Purchase      540                   3.0580
Purchase      6,942                 3.1075
Purchase      153,874               3.0900
Purchase      153,874               3.0800
Purchase      538,559               3.0857
Purchase      118,289               3.0663
Purchase      16,536                3.0748
Purchase      1,304                 3.0639
Purchase      3,099                 3.0731
Purchase      4,396                 3.0639
Purchase      153,874               3.0900
Purchase      31,762                3.1075
Purchase      5,150                 3.1157
Purchase      10,552                3.1050
Purchase      76,937                3.0800
Sale          2,250                 3.1100
Sale          1,400                 3.1100
Sale          1,000                 3.1100
Sale          1,800                 3.1100
Sale          1,200                 3.1100
Sale          10,000                3.1282
Sale          2,200                 3.1100
Sale          1,400                 3.1100
Sale          2,250                 3.1100
Sale          1,000                 3.1100
Sale          1,200                 3.1100
Sale          1,980                 3.1100
Sale          1,900                 3.1100
Sale          1,700                 3.1100
Sale          400                   3.1100
Sale          3,650                 3.1100
Sale          1,500                 3.1150
Sale          3,099                 3.0731
Sale          1,206                 3.0750
Sale          104,248               3.0730
Sale          102,289               3.0894
Sale          148,083               3.0765
Sale          538,559               3.0857
Sale          210,429               3.0899
Sale          800                   3.0600
Sale          12,158                3.1070
Sale          1,200                 3.1100
Sale          1,200                 3.1100
Sale          147,586               3.1082
Sale          1,600                 3.1100
Sale          677                   3.0783
Sale          1,000                 3.1100
Sale          3,000                 3.1100
Sale          400                   3.1100
Sale          2,500                 3.1100
Sale          2,332                 3.0851
Sale          1,000                 3.1100
Sale          6,500                 3.1100
Sale          4,247                 3.0934
Sale          1,440                 3.1100
Sale          562                   3.1100
Sale          1,400                 3.1100
Sale          450                   3.1100
Sale          1,350                 3.1100
Sale          1,500                 3.1100
Sale          1,300                 3.1100
Sale          356                   3.1100
Sale          49,313                3.0934
Sale          4,500                 3.1282
Sale          1,300                 3.1100
Sale          371                   3.1100
Sale          990                   3.1100
Sale          990                   3.1100
Sale          1,000                 3.1100
Sale          1,800                 3.1100
Sale          1,350                 3.1100
Sale          1,400                 3.1100
Sale          450                   3.1100
Sale          49,514                3.0934
Sale          7,181                 3.1075
Sale          1,900                 3.1100
Sale          600                   3.1100
Sale          900                   3.1100
Sale          1,000                 3.1100
Sale          2,700                 3.1100
Sale          2,400                 3.1100
Sale          3,000                 3.1100
Sale          2,080                 3.1100
Sale          2,300                 3.1100
Sale          1,200                 3.1100
Sale          1,300                 3.1100
Sale          927                   3.0757
Sale          19,608                3.0934
Sale          1,125                 3.1100
Sale          1,500                 3.1100
Sale          106,636               3.1075
Sale          2,000                 3.1100
Sale          950                   3.1100
Sale          1,000                 3.1100
Sale          400                   3.1100
Sale          109,321               3.0934
Sale          900                   3.1100
Sale          1,500                 3.1100
Sale          1,200                 3.1100
Sale          1,040                 3.1100
Sale          1,125                 3.1100

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          800           3.06
CFD            Long          104248        3.073
CFD            Long          3099          3.0731
CFD            Long          148083        3.0764
CFD            Long          2332          3.085
CFD            Long          102289        3.0893
CFD            Long          210429        3.0899
CFD            Long          12158         3.107
CFD            Long          147586        3.1081
CFD            Long          1500          3.115
CFD            Short         2332          3.0279
CFD            Short         540           3.0579
CFD            Short         800           3.06
CFD            Short         118289        3.0663
CFD            Short         3099          3.0731
CFD            Short         48253         3.0779
CFD            Short         38780         3.104
CFD            Short         10552         3.105
CFD            Short         32647         3.1069

(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)


(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




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


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)




4.   OTHER INFORMATION
None

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                         11 August 2008
Contact name                               Geoff Smith
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

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