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               19 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     226,705,737     6.11%      6,307,754     0.17%
securities
(2) Derivatives   17,353,225     0.47%      3,182,076     0.09%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            244,058,962     6.58%      9,489,830     0.26%

(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      16,556               3.0200
Purchase      311,523              3.0483
Purchase      213,501              3.0457
Purchase      185,396              3.0468
Purchase      153,874              3.0475
Purchase      26,144               3.0511
Purchase      445                  Transfer
Purchase      6,700                3.0476
Purchase      15,677               3.0287
Purchase      85,867               3.0440
Purchase      85,867               3.0441
Purchase      64,965               3.0397
Purchase      992                  Transfer
Purchase      307,748              3.0475
Purchase      2,429                3.0180
Purchase      29,420               3.0456
Purchase      64,965               3.0200
Purchase      64,965               3.0397
Purchase      7,891                3.0205
Purchase      24,483               3.0200
Sale          900                  3.0284
Sale          85,867               3.0441
Sale          2,429                3.0459
Sale          81                   Transfer
Sale          6,700                3.0476
Sale          7,528                3.0453
Sale          20,190               3.0425
Sale          64,965               3.0200
Sale          64,965               3.0200
Sale          445                  Transfer
Sale          13,675               3.0195
Sale          64,965               3.0397
Sale          445                  3.0385
Sale          765                  3.0361
Sale          2,100                3.0436
Sale          1,125                3.0486
Sale          5,265                3.0433
Sale          575                  3.0483
Sale          177,887              3.0471

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          13675         3.0195
CFD            Long          3415          3.0207
CFD            Long          20190         3.0424
CFD            Long          7528          3.0453
CFD            Long          2429          3.0459
CFD            Long          177887        3.047
CFD            Long          6700          3.0475
CFD            Long          71966         3.0567
CFD            Short         2429          3.0179
CFD            Short         7891          3.0204
CFD            Short         15677         3.0287
CFD            Short         85867         3.044
CFD            Short         242921        3.0456
CFD            Short         185396        3.0468
CFD            Short         6700          3.0475
CFD            Short         311523        3.0483

(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                         20 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