Rule 8.3 - CENTRICA

NB: On the previously issued 8.3 disclosure for Centrica the Long Position was shown incorrectly due to a miscalculation
of the recent rights issue.

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               16 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     307,845,671     6.03%      5,037,331     0.10%
securities
(2) Derivatives   23,741,535     0.46%        997,599     0.02%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            332,564,443     6.51%      6,034,930     0.12%

(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           12,090              2.3698
Purchase           6,731               2.3600
Purchase           12,088              2.3589
Purchase           36,636              2.3910
Purchase           13,534              2.4200
Purchase           12,966              2.3910
Purchase           52,440              2.3698
Purchase           131,904             2.3698
Purchase           174,290             2.3400
Purchase           300,158             2.4200
Purchase           4,368               2.4200
Purchase           300,158             2.4200
Purchase           179,900             2.3400
Purchase           2,908               2.3600
Purchase           147,347             2.3698
Purchase           67,846              2.3601
Purchase           6,374               2.3400
Purchase           290,224             2.4200
Purchase           9,129               2.4200
Purchase           14,403              2.3698
Purchase           61,816              2.3400
Purchase           174,290             2.3400
Purchase           234,422             2.3878
Purchase           2,061               2.3700
Purchase           9,522               2.3708
Purchase           58,800              2.4282
Purchase           267                 Transfer
Purchase           6,300               2.3400
Purchase           9,384               2.4200
Purchase           49,178              2.3909
Purchase           45,507              2.3585
Purchase           389,704             2.4200
Purchase           24,338              2.3556
Purchase           3,700               2.3400
Purchase           57,788              2.3702
Purchase           64,198              2.3909
Purchase           55,055              2.3909
Purchase           17,932              2.3910
Purchase           79,411              2.3909
Purchase           25,923              2.3910
Purchase           8,814               2.3400
Purchase           96,110              2.3909
Purchase           23,332              2.3910
Purchase           20,199              2.3400
Purchase           38,503              2.3910
Purchase           131,366             2.4200
Purchase           20,205              2.4200
Purchase           29,886              2.4200
Sale               5,400               2.4280
Sale               160,667             2.4011
Sale               6,300               2.3400
Sale               52,751              2.3769
Sale               3,700               2.3400
Sale               294,495             2.3940
Sale               32,199              2.3530
Sale               178                 2.3680
Sale               50,038              2.3665
Sale               300,158             2.4200
Sale               85,934              2.4200
Sale               42,357              2.3400
Sale               153,419             2.4192
Sale               45,432              2.4200
Sale               10,826              2.3483
Sale               10,826              2.3483
Sale               300,158             2.4200
Sale               4,785               2.4200
Sale               14,200              2.3988

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            164341          2.3252
CFD            Long            124666          2.341
CFD            Long            129021          2.3434
CFD            Long            44103           2.3522
CFD            Long            32199           2.353
CFD            Long            50038           2.3665
CFD            Long            52751           2.3769
CFD            Long            18203           2.3901
CFD            Long            294495          2.3939
CFD            Long            82351           2.3988
CFD            Long            160667          2.4011
CFD            Short           24338           2.3555
CFD            Short           45507           2.3585
CFD            Short           143546          2.3653
CFD            Short           57788           2.3701
CFD            Short           9522            2.3708
CFD            Short           234422          2.3878
CFD            Short           58800           2.4282

(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                         17 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 CFDs), 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