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 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     194,028,719     5.22%     71,266,125     1.92%
securities
(2) Derivatives   92,373,512     2.49%      7,707,585     0.21%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            287,379,468     7.74%     78,973,710     2.13%


(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           62,781              2.1687
Purchase           15,484              2.1687
Purchase           22,069              2.2101
Purchase           16,267              2.1625
Purchase           8,133               2.1625
Purchase           73,644              2.1625
Purchase           40,404              2.1468
Purchase           229,535             2.1687
Purchase           82,000              2.2243
Purchase           23,252              2.2288
Purchase           152,592             2.1625
Purchase           17,450              2.1175
Purchase           13,752              2.1175
Purchase           19,270              2.1687
Purchase           12,890              2.1687
Purchase           702,693             2.1687
Purchase           318,076             2.1312
Purchase           21,379              2.1734
Purchase           22,966              2.1342
Purchase           90,521              2.1400
Purchase           74,663              2.1720
Purchase           200,000             2.1559
Purchase           28,109              2.2101
Purchase           78,434              2.1710
Purchase           12,584              2.1175
Purchase           22,480              2.1720
Purchase           29,617              2.2288
Purchase           77,224              2.2288
Purchase           28,577              2.1720
Purchase           73,295              2.2101
Purchase           921,051             2.1643
Purchase           890                 2.2100
Purchase           36,514              2.1175
Purchase           18,793              2.1175
Purchase           25,256              2.1687
Purchase           28,494              2.1175
Purchase           139,876             2.1625
Purchase           7,123               2.1175
Purchase           1,676               2.2042
Purchase           32,638              2.1175
Purchase           14,361              2.1625
Purchase           5,264               2.1625
Purchase           64,149              2.1175
Purchase           13,636              2.1175
Purchase           40,880              2.1175
Purchase           12,837              2.1175
Purchase           16,517              2.1175
Purchase           72,093              2.1175
Purchase           4,787               2.1625
Purchase           45,432              2.1250
Purchase           28,558              2.1687
Purchase           48,785              2.1687
Purchase           55,196              2.1687
Purchase           49,225              2.1625
Purchase           2,215               2.1625
Purchase           5,773               2.1687
Purchase           6,766               2.1687
Purchase           32,252              2.1175
Purchase           4,101               2.2525
Purchase           7,011               2.1175
Purchase           34,683              2.1064
Purchase           82,437              2.2143
Sale               67,729              2.1749
Sale               490,589             2.1661
Sale               1,348,285           2.2174
Sale               6,140,326           2.1531
Sale               499,481             2.1622
Sale               9,534               2.1625
Sale               127,532             2.2177
Sale               326,712             2.1732
Sale               17,700              2.1652
Sale               890                 2.2100
Sale               101,786             2.1732
Sale               43,673              2.1625
Sale               52,447              2.1534
Sale               1,612               2.1625

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            13490           2.1359
CFD            Long            6140326         2.153
CFD            Long            52447           2.1533
CFD            Long            499481          2.1621
CFD            Long            17700           2.1652
CFD            Long            490589          2.166
CFD            Long            67729           2.1748
CFD            Long            890             2.21
CFD            Long            1348285         2.2173
CFD            Long            127532          2.2176
CFD            Short           318076          2.1312
CFD            Short           22966           2.1341
CFD            Short           90521           2.1399
CFD            Short           40404           2.1468
CFD            Short           200000          2.1559
CFD            Short           1323063         2.1642
CFD            Short           78434           2.171
CFD            Short           21379           2.1733
CFD            Short           890             2.21

(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 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