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               17 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     310,600,601     6.08%      5,140,588     0.10%
securities
(2) Derivatives   23,844,792     0.47%      1,154,599     0.02%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            335,422,630     6.57%      6,295,187     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           247,827             2.4024
Purchase           33,089              2.4100
Purchase           1,466               2.4100
Purchase           78,007              2.4646
Purchase           72,870              2.4100
Purchase           125,400             2.4200
Purchase           2,518               2.4582
Purchase           4,787               2.4175
Purchase           1,457               2.4100
Purchase           9,786               2.4582
Purchase           4,989               2.3968
Purchase           43,560              2.4100
Purchase           103,550             2.4550
Purchase           19,100              2.4152
Purchase           44,682              2.4244
Purchase           486                 Transfer
Purchase           240,689             2.4169
Purchase           13,400              2.4152
Purchase           7,250               2.4429
Purchase           4,787               2.4200
Purchase           109,337             2.4084
Purchase           8,134               2.4100
Purchase           7,234               2.4378
Purchase           5,529               2.4582
Purchase           5,876               2.4582
Purchase           3,336               2.4582
Purchase           14,637              2.4582
Purchase           4,022               2.4582
Purchase           32,985              2.4582
Purchase           2,058               2.4582
Purchase           14,360              2.4582
Purchase           51,192              2.4100
Purchase           1,977,484           2.4200
Purchase           70,132              2.4182
Purchase           12,517              2.4582
Purchase           2,439               2.4582
Purchase           3,075               2.4650
Purchase           28,521              2.4650
Purchase           6,691               2.4582
Purchase           11,236              2.4582
Purchase           470,176             2.4100
Purchase           10,676              2.4650
Sale               52,149              2.4452
Sale               101,592             2.4396
Sale               4,787               2.4200
Sale               307,901             2.4273
Sale               2,800               2.4271
Sale               38,400              2.3808
Sale               486                 Transfer
Sale               8,347               2.4362
Sale               516,887             2.4142
Sale               33,226              2.4169
Sale               781                 2.4324
Sale               7,250               2.4646
Sale               63,084              2.4568
Sale               18,727              2.4096

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            38400           2.3808
CFD            Long            18727           2.4096
CFD            Long            2800            2.4271
CFD            Long            307901          2.4273
CFD            Long            781             2.4323
CFD            Long            8347            2.4362
CFD            Long            101592          2.4395
CFD            Long            52149           2.4451
CFD            Long            63084           2.4567
CFD            Long            7250            2.4646
CFD            Short           4989            2.3968
CFD            Short           247827          2.4023
CFD            Short           109337          2.4084
CFD            Short           240689          2.4169
CFD            Short           44682           2.4243
CFD            Short           7250            2.4428

(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                         18 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