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 December 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     187,851,436     5.06%     77,833,376     2.10%
securities
(2) Derivatives   98,364,796     2.65%      5,491,467     0.15%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            287,193,469     7.73%     83,324,843     2.24%


(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           23,074              2.1600
Purchase           14,617              2.3103
Purchase           5,000               2.3253
Purchase           498,331             2.2874
Purchase           129,238             2.3228
Purchase           313,232             2.2979
Purchase           110,980             2.3014
Purchase           9,982               2.3024
Purchase           207,413             2.2637
Purchase           131,058             2.2895
Purchase           108,161             2.3130
Purchase           439,169             2.3130
Purchase           2,484               2.2825
Purchase           64,853              2.3010
Purchase           112,674             2.3130
Purchase           156,667             2.3130
Purchase           6,747               2.3027
Purchase           8,166               2.3027
Purchase           45,671              2.3130
Purchase           6,932               2.3250
Purchase           203,825             2.1478
Purchase           15,919              2.3250
Purchase           56,350              2.3130
Purchase           57,939              2.3130
Purchase           200,409             2.3130
Purchase           340,000             2.2942
Purchase           79,855              2.2637
Purchase           97,570              2.3130
Purchase           9,574               2.3250
Purchase           154,510             2.2888
Purchase           62,457              2.2637
Purchase           12,003              2.3250
Purchase           763,000             2.1625
Purchase           117,712             2.3130
Purchase           50,921              2.3130
Purchase           40,443              2.2888
Purchase           20,194              2.3225
Purchase           568,606             2.1625
Sale               43,440              2.3250
Sale               2,565               2.3380
Sale               2,817               2.3250
Sale               1,125               2.2830
Sale               7,174,344           2.2947
Sale               9,116               2.3250
Sale               13,934              2.2764
Sale               763,000             2.1625
Sale               3,505               Transfer
Sale               32,300              2.2921
Sale               53,357              2.2513
Sale               40,306              2.3247
Sale               8,642               2.1597
Sale               1,863,817           2.2816
Sale               791,095             2.2394
Sale               117,854             2.2959
Sale               185,539             2.2946
Sale               90,879              2.3132
Sale               2,484               2.2825
Sale               208,966             2.3215
Sale               13,934              2.2764

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            8642            2.1596
CFD            Long            791095          2.2393
CFD            Long            53357           2.2512
CFD            Long            1863817         2.2816
CFD            Long            2484            2.2825
CFD            Long            32300           2.2921
CFD            Long            176848          2.2939
CFD            Long            7174344         2.2947
CFD            Long            117854          2.2958
CFD            Long            8691            2.3079
CFD            Long            90879           2.3132
CFD            Long            208966          2.3214
CFD            Long            40306           2.3246
CFD            Short           36339           2.2602
CFD            Short           97640           2.2764
CFD            Short           2484            2.2825
CFD            Short           498331          2.2873
CFD            Short           194953          2.2887
CFD            Short           131058          2.2895
CFD            Short           340000          2.2942
CFD            Short           313232          2.2979
CFD            Short           110980          2.3013
CFD            Short           478327          2.3022
CFD            Short           9982            2.3024
CFD            Short           14617           2.3103
CFD            Short           129238          2.3228
CFD            Short           5000            2.3252

(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 December 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   977,237                3.5881           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