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               13 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     224,359,687      6.05%     8,225,711      0.22%
securities
(2) Derivatives   18,574,487      0.50%     2,587,112      0.07%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total            242,934,174      6.55%    10,812,823      0.29%

(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      2,127                 3.1428
Purchase      20,455                3.0978
Purchase      45,660                3.1650
Purchase      300                   3.1750
Purchase      35,734                3.1403
Purchase      219,257               3.1372
Purchase      404,596               3.1404
Purchase      300                   3.1275
Purchase      134,036               3.1566
Purchase      2,215                 3.1425
Purchase      55,099                3.1663
Purchase      26,516                3.1655
Purchase      2,822                 3.1655
Purchase      45,660                3.1425
Purchase      5,039                 3.1425
Purchase      9,604                 3.1425
Purchase      39,068                3.1403
Sale          801                   Transfer
Sale          300                   3.1750
Sale          7,983                 3.1420
Sale          300                   3.1275
Sale          39,068                3.1449
Sale          45,660                3.1425
Sale          17,554                3.1381
Sale          175,033               3.1387
Sale          241,965               3.1404
Sale          20,709                3.1407
Sale          233,846               3.1425
Sale          57,524                3.1498
Sale          3,870                 3.1758
Sale          9,604                 3.1425
Sale          45,660                3.1650

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          300           3.1275
CFD            Long          17554         3.138
CFD            Long          175033        3.1386
CFD            Long          241965        3.1403
CFD            Long          20709         3.1406
CFD            Long          7983          3.1419
CFD            Long          39068         3.1449
CFD            Long          57524         3.1497
CFD            Long          300           3.175
CFD            Short         20455         3.0978
CFD            Short         300           3.1275
CFD            Short         219257        3.1371
CFD            Short         39068         3.1402
CFD            Short         35734         3.1403
CFD            Short         404596        3.1404
CFD            Short         2127          3.1428
CFD            Short         24056         3.1465
CFD            Short         8562          3.1475
CFD            Short         134036        3.1565
CFD            Short         300           3.175

(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                         14 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