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               15 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     225,041,558     6.07%      7,443,826     0.20%
securities
(2) Derivatives   17,930,472     0.48%      2,595,851     0.07%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total           242,972,030      6.55%     10,039,677     0.27%

(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      810                  Transfer
Purchase      173,411              3.0730
Purchase      64,461               3.0700
Purchase      11,710               3.0651
Purchase      124,968              3.0763
Purchase      800                  3.0734
Purchase      2,002                3.0505
Purchase      268,921              3.0756
Purchase      353,226              3.0817
Purchase      8,218                3.0705
Purchase      16,603               3.0700
Sale          800                  3.0734
Sale          1,575                3.0833
Sale          9,085                3.0651
Sale          1,721                Transfer
Sale          3,626                3.0650
Sale          159,872              3.0762
Sale          14,590               3.0596
Sale          17,034               3.0700
Sale          3,139                3.0700
Sale          2,090                3.0611
Sale          2,000                3.0533
Sale          2,011                3.0533
Sale          390                  3.0933
Sale          1,800                3.0880
Sale          4,150                3.0611
Sale          1,134                3.1033
Sale          2,000                3.0533
Sale          799                  3.0700
Sale          32,985               3.0700
Sale          16,603               3.0700
Sale          8,971                3.0785
Sale          64,461               3.0700

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          14590         3.0595
CFD            Long          12711         3.065
CFD            Long          6121          3.0707
CFD            Long          800           3.0734
CFD            Long          5226          3.0747
CFD            Long          159872        3.0762
CFD            Long          6238          3.0792
CFD            Short         2002          3.0504
CFD            Short         11710         3.0651
CFD            Short         86672         3.0704
CFD            Short         173411        3.073
CFD            Short         800           3.0734
CFD            Short         268921        3.0756
CFD            Short         124968        3.0763
CFD            Short         353226        3.0817

(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                         18 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