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               11 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     225,715,354      6.08%     8,470,023      0.23%
securities
(2) Derivatives   18,618,598      0.50%     2,662,023      0.07%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total            244,333,952      6.59%    11,132,046      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      64,235               3.1292
Purchase      799                  3.1488
Purchase      1,223                3.1325
Purchase      1,300                3.1275
Purchase      7,000                3.1000
Purchase      230,811              3.1525
Purchase      89                   Transfer
Purchase      119,515              3.1550
Purchase      230,811              3.1600
Purchase      136,180              3.1373
Purchase      615,496              3.1572
Purchase      1,515                3.1700
Purchase      2,287                3.1525
Purchase      9,200                3.1077
Purchase      65,292               3.1533
Purchase      153,874              3.1600
Purchase      41,416               3.1529
Sale          142,221              3.1348
Sale          3,275                3.1457
Sale          115,598              3.1360
Sale          1,593                3.1482
Sale          46,686               3.1341
Sale          14,710               3.1240
Sale          799                  3.1488
Sale          192,636              3.1539
Sale          615,496              3.1572
Sale          119,515              3.1520
Sale          1,300                3.1275
Sale          46,511               3.1525

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          14710         3.1239
CFD            Long          1300          3.1275
CFD            Long          46686         3.134
CFD            Long          142221        3.1347
CFD            Long          115598        3.1359
CFD            Long          356959        3.1478
CFD            Long          799           3.1487
CFD            Long          119515        3.152
CFD            Long          192636        3.1539
CFD            Short         7000          3.1
CFD            Short         9200          3.1077
CFD            Short         1300          3.1275
CFD            Short         64235         3.1292
CFD            Short         30901         3.1313
CFD            Short         136180        3.1372
CFD            Short         799           3.1487
CFD            Short         13797         3.1519
CFD            Short         41416         3.1528
CFD            Short         65292         3.1532
CFD            Short         119515        3.155

(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                         12 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