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               08 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     239,777,610     6.46%      2,617,777     0.07%
securities
(2) Derivatives   20,905,312     0.56%      2,331,115     0.06%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            261,552,907     7.04%      4,948,892     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           76,375               2.8975
Purchase           164,748              2.8975
Purchase           56,556               2.9594
Purchase           9,240                2.9465
Purchase           197,166              2.9347
Purchase           255,099              2.9817
Purchase           117,300              3.0034
Purchase           10,532               2.8975
Purchase           5,642                2.8975
Purchase           75,603               2.9634
Purchase           72,793               2.8975
Purchase           65,971               2.9594
Purchase           9,165                2.8975
Purchase           61,100               2.9700
Purchase           54,990               2.8975
Purchase           6,110                2.8975
Purchase           914                  3.0310
Purchase           6,556                2.8975
Purchase           11,513               2.9347
Purchase           15,974               2.9573
Purchase           43,446               2.8975
Purchase           62,052               2.9700
Purchase           486,640              2.9620
Purchase           18,301               2.9487
Purchase           3,900                2.8931
Purchase           267                  Transfer
Purchase           800                  2.8975
Purchase           81,782               2.9251
Purchase           700                  2.9636
Purchase           239,992              2.9726
Sale               282,425              2.9674
Sale               14,010               2.9571
Sale               18,384               2.9446
Sale               70,882               2.9594
Sale               51,326               2.9265
Sale               700                  2.9636
Sale               61,100               2.9849
Sale               62,052               2.9700
Sale               236,028              2.9791
Sale               2,072                2.9564
Sale               313,668              2.9397
Sale               10,532               2.8975
Sale               254,405              2.9456
Sale               800                  2.9050
Sale               9,616                2.9971
Sale               239,993              2.9755
Sale               185,906              2.9464
Sale               1,992                2.9272
Sale               4,497                2.9571
Sale               82,582               2.8983
Sale               9,333                2.9752
Sale               800                  2.8975
Sale               25,274               2.8975
Sale               952                  2.9550
Sale               36,533               2.9571

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          82582         2.8982
CFD            Long          8090          2.9161
CFD            Long          65794         2.9208
CFD            Long          117108        2.9237
CFD            Long          1992          2.9272
CFD            Long          313668        2.9397
CFD            Long          18384         2.9446
CFD            Long          254405        2.9456
CFD            Long          185906        2.9463
CFD            Long          5051          2.9485
CFD            Long          34699         2.9487
CFD            Long          2072          2.9563
CFD            Long          700           2.9635
CFD            Long          62792         2.965
CFD            Long          282425        2.9674
CFD            Long          9333          2.9752
CFD            Long          239993        2.9755
CFD            Long          236028        2.9791
CFD            Long          29313         2.9821
CFD            Long          9616          2.997
CFD            Short         3900          2.893
CFD            Short         81782         2.9251
CFD            Short         11513         2.9346
CFD            Short         197166        2.9347
CFD            Short         18301         2.9486
CFD            Short         70552         2.96
CFD            Short         486640        2.9619
CFD            Short         700           2.9635
CFD            Short         239992        2.9725
CFD            Short         255099        2.9817
CFD            Short         5051          3.0104

(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                         09 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