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               17 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     238,347,212     6.42%      2,187,171     0.06%
securities
(2) Derivatives   21,319,940     0.57%        970,620     0.03%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            260,537,137     7.02%      3,157,791     0.09%

(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           178                 Transfer
Purchase           10,240              3.0141
Purchase           178                 Transfer
Purchase           65,500              2.9668
Purchase           68,142              3.0061
Purchase           7,743               2.9610
Purchase           8,409               2.9610
Purchase           62,185              2.9913
Purchase           232,696             2.9625
Purchase           39,227              2.9954
Purchase           20,389              2.9610
Purchase           34,601              3.0042
Purchase           60,421              2.9804
Purchase           114,926             2.8244
Purchase           8,841               2.9721
Purchase           73,623              2.9854
Purchase           5,167               2.9533
Purchase           89                  Transfer
Purchase           9,821               3.0600
Purchase           8,749               3.0600
Purchase           700                 2.9829
Purchase           76,250              3.0600
Purchase           39,650              3.0600
Purchase           46,293              2.8244
Purchase           201,976             2.9924
Purchase           15,982              3.0600
Purchase           34,031              2.8244
Sale               27,280              3.0059
Sale               919                 3.0000
Sale               68,716              2.9945
Sale               25,167              2.9829
Sale               14,435              3.0020
Sale               168,248             3.0171
Sale               60,306              3.0059
Sale               31,912              3.0020
Sale               371,926             3.0171
Sale               8,284               2.9829
Sale               15,700              3.0040
Sale               178                 Transfer
Sale               16,971              3.0059
Sale               302,912             2.9783
Sale               2,390               3.0020
Sale               700                 2.9829
Sale               111,982             2.9943
Sale               286,203             3.0005
Sale               49,273              2.9794
Sale               178                 Transfer
Sale               12,640              3.0046
Sale               399,653             2.9973
Sale               21,738              3.0595
Sale               10,195              3.0025
Sale               21,706              3.0059
Sale               19,969              3.0174
Sale               18,180              3.0175
Sale               2,941               3.0059
Sale               1,557               3.0020
Sale               175                 3.0020
Sale               330                 3.0059
Sale               2,079               3.0191
Sale               1,500               2.9580
Sale               1,488               3.0059
Sale               133,869             3.0171
Sale               9,215               3.0177
Sale               19,868              3.0059
Sale               10,512              3.0020
Sale               122,528             3.0171
Sale               69,896              2.9829
Sale               58,931              2.9829
Sale               5,136               3.0020
Sale               9,702               3.0059
Sale               59,834              3.0171
Sale               11,486              3.0020
Sale               273                 3.0020
Sale               104,662             3.0171
Sale               3,230               3.0059
Sale               1,712               3.0020
Sale               68,934              2.9929
Sale               27,840              3.0172
Sale               4,514               3.0059
Sale               525                 3.0020
Sale               6,168               3.0179
Sale               789                 3.0020
Sale               3,220               3.0186
Sale               8,980               3.0020
Sale               517                 3.0059
Sale               574                 3.0020
Sale               1,085               3.0059
Sale               6,716               3.0179
Sale               1,144               3.0020
Sale               13,360              3.0175
Sale               2,160               3.0059
Sale               50,723              2.9628
Sale               996                 3.0059

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          302912        2.9783
CFD            Long          49273         2.9794
CFD            Long          700           2.9828
CFD            Long          43431         2.9926
CFD            Long          68934         2.9929
CFD            Long          68716         2.9944
CFD            Long          68551         2.9953
CFD            Long          399653        2.9973
CFD            Long          919           3
CFD            Long          286203        3.0005
CFD            Long          117953        3.0022
CFD            Long          116704        3.0036
CFD            Long          12640         3.0046
CFD            Long          4823          3.03
CFD            Long          206885        3.053
CFD            Long          21738         3.0595
CFD            Short         65500         2.9668
CFD            Short         60421         2.9804
CFD            Short         700           2.9828
CFD            Short         73623         2.9854
CFD            Short         62185         2.9912
CFD            Short         201976        2.9923
CFD            Short         39227         2.9953
CFD            Short         68142         3.006
CFD            Short         10240         3.0141

(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                         20 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