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               29 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     228,829,705     6.17%      4,216,636     0.11%
securities
(2) Derivatives   17,759,955     0.48%      3,332,527     0.09%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            246,589,660     6.65%      7,549,163     0.20%

(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      7,334                3.2636
Purchase      24,621               3.2725
Purchase      45,300               3.2725
Purchase      21,872               3.2725
Purchase      148,088              3.2725
Purchase      771                  3.2725
Purchase      3,761                3.2725
Purchase      8,312                3.2725
Purchase      4,196                3.2720
Purchase      43,773               3.2725
Purchase      16,806               3.2725
Purchase      101,513              3.2699
Purchase      35,155               3.2725
Purchase      25,007               3.2719
Purchase      1,600                3.2747
Purchase      7,334                3.2636
Purchase      410,000              3.2755
Purchase      410,000              3.2755
Purchase      61,545               3.2603
Purchase      6,513                3.2730
Purchase      76,939               3.2625
Purchase      61,503               3.2730
Purchase      76,939               3.2625
Purchase      740                  3.2742
Purchase      87,736               3.2725
Purchase      28,990               3.2725
Purchase      18,051               3.2725
Purchase      9,141                3.2725
Purchase      173,246              3.2725
Purchase      278,877              3.2725
Purchase      27,192               3.2725
Purchase      32,285               3.2725
Sale          6,513                3.2820
Sale          5,926                3.2725
Sale          83,827               3.2725
Sale          15,273               3.2700
Sale          7,654                3.2720
Sale          36,298               3.2738
Sale          109,387              3.2729
Sale          27,942               3.2618
Sale          46,349               3.2721
Sale          2,250                3.2834
Sale          96,266               3.2760
Sale          61,503               3.2725
Sale          194,081              3.2713
Sale          1,400                3.2683
Sale          1,600                3.2747
Sale          410,000              3.2755
Sale          1,250                3.2834
Sale          22,575               3.2725
Sale          3,644                3.2600
Sale          14,521               3.2725
Sale          9,845                3.2725
Sale          128,708              3.2725
Sale          1,000                3.2834
Sale          3,883                3.2834
Sale          1,822                3.2834
Sale          2,722                3.2725
Sale          112,541              3.2725
Sale          3,386                3.2725
Sale          3,000                3.2708
Sale          7,334                3.2636
Sale          27,192               3.2725
Sale          1,900                3.2683
Sale          93,840               3.2757
Sale          43,773               3.2725
Sale          278,877              3.2725
Sale          1,350                3.2784
Sale          2,160                3.2784
Sale          1,130                3.2784
Sale          2,250                3.2784
Sale          1,675                3.2708
Sale          78,667               3.2730
Sale          13,882               3.2737

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          194081        3.2712
CFD            Long          7654          3.2719
CFD            Long          46349         3.272
CFD            Long          15028         3.2723
CFD            Long          16534         3.2725
CFD            Long          109387        3.2729
CFD            Long          247843        3.2736
CFD            Long          36298         3.2737
CFD            Long          1600          3.2746
CFD            Long          93840         3.2756
CFD            Long          96266         3.276
CFD            Long          6513          3.282
CFD            Short         61545         3.2602
CFD            Short         7334          3.2636
CFD            Short         101513        3.2698
CFD            Short         107778        3.2716
CFD            Short         25007         3.2718
CFD            Short         6513          3.2729
CFD            Short         1600          3.2746
CFD            Short         410000        3.2754

(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                         01 September 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