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               18 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     225,557,201     6.08%      7,187,266     0.19%
securities
(2) Derivatives   17,695,734     0.48%      2,969,971     0.08%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            243,252,935     6.56%     10,157,237     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      3,918                3.0600
Purchase      5,794                3.0605
Purchase      118,816              3.0431
Purchase      19,480               3.0391
Purchase      17,017               3.0551
Purchase      4,191                3.0600
Purchase      322,210              3.0515
Purchase      44,204               3.0485
Purchase      244,062              3.0456
Purchase      2,893                3.1000
Purchase      2,367                3.1000
Purchase      104,058              3.0600
Sale          16,720               3.0423
Sale          114,872              3.0474
Sale          990                  3.0364
Sale          34,378               3.0474
Sale          16,963               3.0600
Sale          1,125                3.0581
Sale          850                  3.0684
Sale          127                  Transfer
Sale          3,365                3.0474
Sale          9,311                3.0609
Sale          71,813               3.0600
Sale          1,955                3.0650
Sale          66,716               3.0474
Sale          2,722                3.0561
Sale          31,460               3.0474

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          16720         3.0422
CFD            Long          114872        3.0474
CFD            Long          11169         3.0492
CFD            Long          10653         3.0561
CFD            Long          9311          3.0608
CFD            Short         19480         3.0391
CFD            Short         118816        3.043
CFD            Short         244062        3.0455
CFD            Short         44204         3.0485
CFD            Short         322210        3.0515
CFD            Short         17017         3.0551
CFD            Short         5794          3.0604

(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                         19 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