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               05 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     198,827,605     5.35%     64,656,146     1.74%
securities
(2) Derivatives   86,152,055     2.32%      8,148,864     0.22%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            285,956,897     7.70%     72,805,010     1.96%


(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           249,044             2.1084
Purchase           372,534             2.1045
Purchase           434,690             2.1179
Purchase           228,144             2.1040
Purchase           3,473               2.1328
Purchase           910                 2.1075
Purchase           4,783               2.1250
Purchase           46,029              2.0877
Purchase           64,702              2.1036
Purchase           95,497              2.1084
Purchase           119,214             2.0779
Purchase           74,986              2.1084
Purchase           268,492             2.1215
Purchase           905,837             2.1025
Purchase           5,040               2.1025
Purchase           28,500              2.1026
Purchase           50,864              2.1250
Purchase           80,724              2.1250
Purchase           347,478             2.1025
Purchase           272,744             2.1025
Purchase           352,644             2.0891
Purchase           54,159              2.1076
Purchase           10,609              2.0750
Purchase           55,021              2.1076
Purchase           28,301              2.1076
Purchase           10,059              2.0617
Sale               11,071,457          2.0940
Sale               35,120              2.1090
Sale               59,360              2.1054
Sale               56,500              2.1017
Sale               910                 2.1075
Sale               55,380              2.1013
Sale               534                 2.1255
Sale               26,670              2.1000
Sale               54,829              2.0896
Sale               51,078              2.1220
Sale               4,000               2.0700
Sale               787,924             2.1092
Sale               17,307              2.1250


(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            25954           2.0638
CFD            Long            54829           2.0896
CFD            Long            11071457        2.0939
CFD            Long            55380           2.1012
CFD            Long            56500           2.1016
CFD            Long            59360           2.1054
CFD            Long            910             2.1075
CFD            Long            35120           2.1089
CFD            Long            787924          2.1092
CFD            Long            51078           2.1219
CFD            Short           119214          2.0778
CFD            Short           4524            2.0826
CFD            Short           46029           2.0876
CFD            Short           352644          2.089
CFD            Short           28500           2.1026
CFD            Short           64702           2.1036
CFD            Short           223620          2.1044
CFD            Short           372534          2.1045
CFD            Short           910             2.1075
CFD            Short           434690          2.1178
CFD            Short           268492          2.1214
CFD            Short           3473            2.132


(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                         08 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