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               10 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     240,536,952     6.48%      2,117,935     0.06%
securities
(2) Derivatives   20,385,089     0.55%      2,585,340     0.07%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            261,792,026     7.05%      4,703,275     0.13%

(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           1,400               2.6500
Purchase           200                 2.8250
Purchase           157,789             2.7454
Purchase           5,656               2.6792
Purchase           345,750             2.7349
Purchase           62,052              2.6775
Purchase           2,430               2.6500
Purchase           630,068             2.7293
Purchase           75,225              2.7750
Purchase           1,200               2.8125
Purchase           3,600               2.6850
Purchase           232                 2.6754
Purchase           306,339             2.7691
Purchase           2,927               2.7314
Purchase           55,230              2.7750
Purchase           200,195             2.7266
Purchase           2,327               2.5675
Purchase           198,524             2.7349
Purchase           10,000              2.6679
Purchase           992                 2.6500
Purchase           595,885             2.6923
Purchase           192,581             2.7750
Purchase           217,183             2.8250
Purchase           3,579               2.7806
Purchase           1,970               2.6500
Purchase           12,315              2.6500
Purchase           17,742              2.7505
Purchase           35,556              2.6500
Purchase           154,607             2.6500
Purchase           48,872              2.6400
Purchase           61,060              2.7025
Purchase           1,125               2.8300
Purchase           7,112               2.6500
Purchase           30,138              2.6500
Purchase           28,577              2.7806
Purchase           2,550               2.7000
Sale               146,711             2.7469
Sale               57,956              2.7022
Sale               624,283             2.7282
Sale               55,849              2.6623
Sale               36,766              2.8887
Sale               29,827              2.6981
Sale               44,025              2.6500
Sale               3,473               2.7243
Sale               1,200               2.8125
Sale               61,060              2.7160
Sale               10,000              2.6680
Sale               156,380             2.6894
Sale               1,125               2.5750
Sale               405,010             2.7499
Sale               18,619              2.8284
Sale               5,656               2.6759
Sale               217,183             2.8250
Sale               89,824              2.6500
Sale               64,160              2.6500
Sale               63,055              2.6500
Sale               10,000              2.6679
Sale               62,052              2.6775
Sale               12,315              2.6500
Sale               3,597               2.7046
Sale               6,100               2.7151
Sale               193,159             2.7431
Sale               3,600               2.6850
Sale               776                 2.7425
Sale               200                 2.8250
Sale               176,438             2.7041
Sale               992                 2.6500
Sale               65,860              2.6500

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          5656          2.6758
CFD            Long          3600          2.685
CFD            Long          29827         2.698
CFD            Long          57956         2.7022
CFD            Long          176438        2.7041
CFD            Long          3597          2.7045
CFD            Long          6100          2.715
CFD            Long          11533         2.7194
CFD            Long          624283        2.7282
CFD            Long          193159        2.743
CFD            Long          135178        2.7492
CFD            Long          405010        2.7499
CFD            Long          200           2.825
CFD            Long          87544         2.8562
CFD            Short         1400          2.65
CFD            Short         232           2.6753
CFD            Short         5656          2.6791
CFD            Short         3600          2.685
CFD            Short         595885        2.6923
CFD            Short         200195        2.7265
CFD            Short         630068        2.7293
CFD            Short         2927          2.7314
CFD            Short         345750        2.7348
CFD            Short         198524        2.7349
CFD            Short         139684        2.7367
CFD            Short         17742         2.7504
CFD            Short         306339        2.7691
CFD            Short         18105         2.8122
CFD            Short         200           2.825

(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                         13 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