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               09 October 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     239,691,215     6.45%      2,015,489     0.05%
securities
(2) Derivatives   19,930,174     0.54%      1,571,686     0.04%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            260,491,374     7.02%      3,587,175     0.10%

(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           Price per unit
                   Securities          (GBP)
Purchase           103,627              2.8125
Purchase           698,000              2.8566
Purchase           1,613                2.8575
Purchase           698,000              2.8566
Purchase           2,500                2.8004
Purchase           46,539               2.9100
Purchase           220,127              2.8705
Purchase           183,031              2.9134
Purchase           39,204               2.8573
Purchase           1,600                2.8754
Purchase           15,513               2.8125
Purchase           1,100                2.9300
Purchase           263,704              2.8314
Purchase           9,616                2.9246
Purchase           14,716               2.8815
Purchase           36,766               2.8882
Purchase           800                  2.8800
Purchase           11,920               2.8964
Purchase           107,140              2.9114
Purchase           3,923                2.8869
Purchase           15,265               2.8125
Purchase           152,650              2.8125
Purchase           8,354                2.9362
Purchase           2,629                2.9362
Purchase           5,809                2.9363
Purchase           42,135               2.9325
Purchase           45,795               2.9100
Purchase           7,245                2.8815
Purchase           12,212               2.8125
Purchase           170,173              2.8127
Purchase           6,903                2.8687
Purchase           386,569              2.8948
Purchase           18,225               2.8802
Purchase           513,153              3.0251
Sale               14,900               2.8537
Sale               36,766               2.8882
Sale               32,100               2.8673
Sale               27,887               2.8931
Sale               46,539               2.9100
Sale               81,577               2.9290
Sale               27,800               2.8673
Sale               280,988              2.9177
Sale               30,800               2.8673
Sale               698,000              2.8566
Sale               1,100                2.9300
Sale               1,430                2.8471
Sale               81,703               2.8535
Sale               18,728               2.8125
Sale               243                  2.9700
Sale               6,932                2.8125
Sale               31,671               2.8125
Sale               209,697              2.8125
Sale               1,620                2.9376
Sale               181,573              2.9544
Sale               6,800                2.8796
Sale               5,117                2.8125
Sale               45,795               2.9246
Sale               513,153              3.0251
Sale               1,398                Transfer
Sale               104,104              2.9052
Sale               216,902              2.9205
Sale               296,474              2.9411
Sale               529,686              2.9409
Sale               800                  2.8800
Sale               426                  2.9797
Sale               400,242              2.8923

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          1430          2.847
CFD            Long          14900         2.8537
CFD            Long          6800          2.8796
CFD            Long          800           2.88
CFD            Long          36766         2.8882
CFD            Long          400242        2.8922
CFD            Long          15565         2.8964
CFD            Long          104104        2.9052
CFD            Long          163636        2.916
CFD            Long          280988        2.9176
CFD            Long          81577         2.9289
CFD            Long          1100          2.93
CFD            Long          45416         2.9338
CFD            Long          53266         2.9341
CFD            Long          529686        2.9409
CFD            Long          296474        2.9411
CFD            Long          181573        2.9543
CFD            Long          426           2.9796
CFD            Short         2500          2.8004
CFD            Short         170173        2.8127
CFD            Short         263704        2.8314
CFD            Short         698000        2.8566
CFD            Short         39204         2.8573
CFD            Short         220127        2.8705
CFD            Short         1600          2.8754
CFD            Short         800           2.88
CFD            Short         386569        2.8947
CFD            Short         11920         2.8963
CFD            Short         161339        2.9086
CFD            Short         107140        2.9114
CFD            Short         9616          2.9246
CFD            Short         1100          2.93
CFD            Short         334974        2.936
CFD            Short         21692         2.9486

(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)                 YES


Date of disclosure                         10 October 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)


SUPPLEMENTAL FORM 8

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)


OPEN POSITIONS (Note 1)
Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,
                              or derivative relates                   European etc.
Option            Purchased   869,985                4.0304           EURO           18/12/2008

Notes

1. Where there are open option positions or open derivative positions (except for CFD's), full details should be given.
Full details of any existing agreements to purchase or to sell should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover
Panel's website at www.thetakeoverpanel.org.uk