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               20 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     227,094,470     6.12%      6,296,545     0.17%
securities
(2) Derivatives   17,346,354     0.47%      3,566,464     0.10%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            244,440,824     6.59%      9,863,009     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      336,949              3.0583
Purchase      405                  Transfer
Purchase      22,820               3.0615
Purchase      67,775               3.0632
Purchase      8,245                3.0430
Purchase      534                  Transfer
Purchase      170,878              3.0568
Purchase      99,516               3.0537
Purchase      58,026               3.0582
Purchase      3,000                3.0430
Purchase      1,298                3.0569
Purchase      16,624               3.0425
Purchase      178                  Transfer
Sale          182,410              3.0584
Sale          22,826               3.0434
Sale          178                  Transfer
Sale          17,043               3.0502
Sale          16,556               3.0425
Sale          1,298                3.0569
Sale          405                  Transfer
Sale          405                  3.0509
Sale          1,125                3.0508
Sale          112,635              3.0710
Sale          3,000                3.0570
Sale          534                  Transfer
Sale          159                  3.0709
Sale          992                  3.0709
Sale          1,400                3.0508
Sale          1,495                3.0558
Sale          756                  3.0536
Sale          600                  3.0533
Sale          33,698               3.0545

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          22826         3.0433
CFD            Long          17043         3.0501
CFD            Long          4338          3.0533
CFD            Long          33698         3.0544
CFD            Long          1298          3.0569
CFD            Long          3000          3.057
CFD            Long          182410        3.0583
CFD            Long          112635        3.0709
CFD            Short         11245         3.0429
CFD            Short         99516         3.0536
CFD            Short         170878        3.0568
CFD            Short         1298          3.0569
CFD            Short         58026         3.0582
CFD            Short         336949        3.0583
CFD            Short         22820         3.0615
CFD            Short         67775         3.0631

(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                         21 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