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               04 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     228,820,443      6.17%     8,442,936      0.23%
securities
(2) Derivatives   18,895,794      0.51%     3,198,219      0.09%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total            247,716,237      6.68%    11,641,155      0.31%


(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      153,874               3.0175
Purchase      153,874               3.0175
Purchase      1,682                 2.9725
Purchase      15,000                2.9729
Purchase      153,874               3.0100
Purchase      1,731,090             3.0016
Purchase      307,748               3.0175
Purchase      38,469                2.9625
Purchase      130,763               2.9981
Purchase      153,874               3.0200
Purchase      42,312                2.9729
Purchase      153,874               3.0375
Purchase      17,000                2.9873
Purchase      7,878                 3.0108
Purchase      46,787                2.9928
Purchase      123,523               2.9690
Purchase      1,400                 2.9330
Purchase      5,230                 2.9700
Purchase      1,469                 3.0775
Purchase      574,159               2.9994
Purchase      461,623               2.9600
Purchase      1,111,646             2.9700
Purchase      486,942               2.9700
Purchase      89,204                2.9725
Purchase      153,874               3.0100
Purchase      10,000                3.0280
Purchase      25,465                2.9730
Purchase      358,182               2.9949
Sale          117,602               3.0108
Sale          74,714                2.9737
Sale          249,522               2.9737
Sale          126,177               3.0475
Sale          393,042               3.0108
Sale          22,329                3.0027
Sale          16,083                3.0090
Sale          4,811                 3.0090
Sale          6,678                 3.0027
Sale          2,000                 3.0082
Sale          1,731,090             3.0016
Sale          169                   3.0300
Sale          105,488               3.0054
Sale          23,877                3.0108
Sale          7,291                 3.0108
Sale          8,354                 3.0280
Sale          15,000                2.9671
Sale          491,859               3.0028
Sale          35,665                3.0037
Sale          10,000                3.0280
Sale          126                   3.0027
Sale          975                   3.0090
Sale          869                   3.0090
Sale          21,193                3.0108
Sale          1,206                 3.0027
Sale          5,050                 3.0160
Sale          115                   3.0027
Sale          1,391                 2.9735
Sale          2,026                 3.0108
Sale          463                   3.0090
Sale          2,292                 3.0108
Sale          639                   3.0027
Sale          95                    3.0090
Sale          1,553                 2.9736
Sale          9,959                 3.0010
Sale          486,942               2.9700
Sale          1,111,646             2.9700
Sale          70,263                2.9863
Sale          77,116                3.1475
Sale          20,194                2.9725
Sale          84                    3.0090
Sale          6,718                 2.9736
Sale          1,355                 3.0027
Sale          301                   3.0090
Sale          4,743                 2.9736
Sale          415                   3.0027
Sale          11,265                3.0108
Sale          639                   3.0027
Sale          462                   3.0090
Sale          7,277                 2.9736
Sale          13,489                2.9737
Sale          590                   3.0027
Sale          15,084                2.9737
Sale          426                   3.0090
Sale          17,272                2.9725
Sale          16,348                3.0108
Sale          670                   3.0090
Sale          10,521                2.9737
Sale          929                   3.0027
Sale          7,288                 2.9736
Sale          11,282                3.0108
Sale          10,394                3.0108

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          15000         2.967
CFD            Long          491859        3.0027
CFD            Long          35665         3.0036
CFD            Long          105488        3.0054
CFD            Long          18354         3.028
CFD            Short         1400          2.9329
CFD            Short         123523        2.9689
CFD            Short         142628        2.9717
CFD            Short         42312         2.9728
CFD            Short         40465         2.9729
CFD            Short         17000         2.9873
CFD            Short         46787         2.9927
CFD            Short         358182        2.9949
CFD            Short         130763        2.998
CFD            Short         574159        2.9994
CFD            Short         15311         3.0011
CFD            Short         52149         3.0037
CFD            Short         8403          3.0044
CFD            Short         9896          3.0068
CFD            Short         10000         3.028

(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                         05 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