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               12 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     224,211,076      6.04%     8,472,361      0.23%
securities
(2) Derivatives   18,890,853      0.51%     2,575,423      0.07%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total            243,101,929      6.55%    11,047,784      0.30%

(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      1,066                Transfer
Purchase      97,715               3.1577
Purchase      1,573                3.1405
Purchase      31,660               3.1683
Purchase      4,491                Transfer
Purchase      500                  3.1635
Purchase      1,700                3.1703
Purchase      3,869                3.1648
Purchase      308                  Transfer
Purchase      9,510                3.1532
Purchase      197,460              3.1559
Purchase      3,472                3.1650
Purchase      79,403               3.1622
Purchase      62,214               3.1650
Purchase      8,267                3.1569
Purchase      25,538               3.1650
Purchase      30,293               3.1610
Purchase      341,701              3.1610
Purchase      18,236               3.1610
Sale          185,720              3.1581
Sale          94,539               3.1625
Sale          500                  3.1635
Sale          1,573                3.1553
Sale          1,904                3.1650
Sale          1,846,489            Transfer
Sale          11,990               3.1554
Sale          17,229               3.1650
Sale          3,173                3.1575
Sale          17,869               3.1630
Sale          45,184               3.1621
Sale          13,051               3.1630
Sale          26,655               3.1645
Sale          3,172                3.1630
Sale          7,319                3.1645
Sale          8,039                3.1630
Sale          97,432               3.1602
Sale          41,416               3.1605

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          1573          3.1553
CFD            Long          11990         3.1554
CFD            Long          185720        3.158
CFD            Long          97432         3.1602
CFD            Long          41416         3.1604
CFD            Long          45184         3.1621
CFD            Long          303243        3.1623
CFD            Long          94539         3.1625
CFD            Long          500           3.1635
CFD            Long          7319          3.1644
CFD            Long          26655         3.1645
CFD            Short         1573          3.1405
CFD            Short         9510          3.1532
CFD            Short         197460        3.1558
CFD            Short         97715         3.1576
CFD            Short         12180         3.1599
CFD            Short         79403         3.1621
CFD            Short         500           3.1635
CFD            Short         25015         3.1644
CFD            Short         31660         3.1683
CFD            Short         1700          3.1702

(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                         13 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