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               03 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     209,864,310     5.65%     49,324,969     1.33%
securities
(2) Derivatives   70,569,058     1.90%      9,118,410     0.25%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            281,410,605     7.58%     58,443,379     1.57%

(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           208                 2.1313
Purchase           1,938               2.1482
Purchase           5,174               2.1371
Purchase           106,959             2.1445
Purchase           34,010              2.1445
Purchase           981                 2.1376
Purchase           1,434               2.1482
Purchase           1,630               2.1370
Purchase           252                 2.1313
Purchase           4,516               2.1482
Purchase           1,182               2.1482
Purchase           800                 2.1313
Purchase           807                 2.1376
Purchase           1,343               2.1370
Purchase           1,673               2.1370
Purchase           2,056               2.1575
Purchase           1,007               2.1376
Purchase           1,474               2.1482
Purchase           45,948              2.1445
Purchase           1,328               2.1376
Purchase           28,059              2.1445
Purchase           1,645,167           2.1445
Purchase           52,303              2.1383
Purchase           463,556             2.1382
Purchase           414,890             2.1404
Purchase           16,249              2.1330
Purchase           398,654             2.1308
Purchase           143,029             2.1452
Purchase           335                 2.0800
Purchase           81,202              2.1342
Purchase           3,106               2.1377
Purchase           79,462              2.1370
Purchase           34,962              2.1445
Purchase           69,435              2.1482
Purchase           12,286              2.1313
Purchase           47,719              2.1376
Purchase           23,718              2.1370
Purchase           3,667               2.1313
Purchase           491,178             2.1445
Purchase           14,245              2.1376
Purchase           20,730              2.1482
Purchase           4,067               2.1450
Purchase           71,991              2.1437
Purchase           686                 2.1370
Purchase           14,460              2.1445
Purchase           107                 2.1312
Purchase           341                 2.1313
Purchase           629                 2.1482
Purchase           259                 2.1312
Purchase           711                 2.1370
Purchase           428                 2.1376
Purchase           609                 2.1482
Purchase           137,411             2.1437
Purchase           110                 2.1312
Purchase           482,810             2.1437
Purchase           58,535              2.1513
Purchase           66,377              2.1437
Purchase           74,610              2.1437
Purchase           153,596             2.1437
Purchase           16,536              2.1437
Purchase           11,688              2.1616
Purchase           14,349              2.1450
Purchase           118,196             2.1437
Purchase           3,821               2.1482
Purchase           1,405               2.1376
Purchase           48,662              2.1445
Purchase           2,051               2.1482
Purchase           14,975              2.1445
Purchase           412                 2.1376
Purchase           2,338               2.1370
Purchase           2,206               2.1370
Purchase           6,571               2.1800
Purchase           361                 2.1313
Purchase           90,573              2.1445
Purchase           2,624               2.1376
Purchase           4,369               2.1371
Purchase           676                 2.1313
Purchase           6,645               2.1450
Purchase           2,215               2.1450
Purchase           4,430               2.1450
Purchase           156,944             2.1450
Sale               311,695             2.1527
Sale               297,582             2.1467
Sale               2,056               2.1575
Sale               81                  2.1480
Sale               126,423             2.1536
Sale               62,823              2.1336
Sale               156,200             2.1356
Sale               49,495              2.1496
Sale               9,407               2.1450
Sale               23,973              2.1450
Sale               10,979              2.1450
Sale               900                 2.1530
Sale               156,944             2.1450
Sale               8,649,447           2.1424

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            86749           2.1329
CFD            Long            62823           2.1336
CFD            Long            156200          2.1355
CFD            Long            8649447         2.1424
CFD            Long            297582          2.1466
CFD            Long            49495           2.1496
CFD            Long            262209          2.1505
CFD            Long            311695          2.1527
CFD            Long            126423          2.1535
CFD            Long            2056            2.1575
CFD            Long            11293           2.1577
CFD            Short           335             2.08
CFD            Short           398654          2.1308
CFD            Short           83081           2.1313
CFD            Short           16249           2.133
CFD            Short           81202           2.1341
CFD            Short           515859          2.1382
CFD            Short           414890          2.1404
CFD            Short           143029          2.1451
CFD            Short           2056            2.1575

(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                         04 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