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               04 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     206,884,196     5.57% 5    4,784,966     1.48%
securities
(2) Derivatives   76,254,921     2.05%      8,530,910     0.23%
(other than
options)
(3) Options and      977,237     0.03%              0     0.00%
agreements to
purchase/sell
Total            284,116,354     7.65%     63,315,876     1.70%

(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           947                 2.0477
Purchase           372,387             2.0756
Purchase           10,060              2.0855
Purchase           445                 Transfer
Purchase           4,782               2.0750
Purchase           90,738              2.1105
Purchase           810                 Transfer
Purchase           251,974             2.0694
Purchase           24,634              2.1071
Purchase           1,247               Transfer
Purchase           150,000             2.1308
Purchase           10,000              2.0703
Purchase           178                 Transfer
Purchase           81,784              2.0710
Purchase           474,717             2.0688
Purchase           18,480              2.0951
Purchase           135,453             2.1040
Purchase           16,634              2.1040
Purchase           4,920               2.1306
Purchase           12,149              2.1040
Purchase           2,865               2.1625
Purchase           31,795              2.1040
Purchase           16,775              2.1040
Purchase           127,160             2.0750
Purchase           12,541              2.1040
Purchase           37,007              2.1040
Purchase           2,215               2.0750
Purchase           59,143              2.1152
Purchase           176,698             2.1040
Purchase           592,928             2.1040
Purchase           89,497              2.1306
Purchase           1,436,394           2.1306
Sale               94,818              2.0980
Sale               2,865               2.1625
Sale               702,625             2.1373
Sale               864                 Transfer
Sale               5,447               2.1223
Sale               165,900             2.1130
Sale               405                 Transfer
Sale               405                 2.0476
Sale               107,299             2.1159
Sale               370,272             2.1296
Sale               178                 Transfer
Sale               5,652,712           2.1085
Sale               10,060              2.1372
Sale               20,000              2.1322
Sale               68,229              2.0750
Sale               2,880               2.1050
Sale               5,399               2.0993
Sale               17,291              2.1239

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            94438           2.075
CFD            Long            88264           2.0953
CFD            Long            94818           2.098
CFD            Long            5652712         2.1085
CFD            Long            165900          2.1129
CFD            Long            107299          2.1159
CFD            Long            5447            2.1223
CFD            Long            17291           2.1238
CFD            Long            370272          2.1296
CFD            Long            20000           2.1321
CFD            Long            10060           2.1371
CFD            Long            702625          2.1372
CFD            Long            236794          2.14
CFD            Long            43164           2.1406
CFD            Long            2865            2.1624
CFD            Short           947             2.0476
CFD            Short           474717          2.0687
CFD            Short           251974          2.0694
CFD            Short           10000           2.0703
CFD            Short           81784           2.071
CFD            Short           372387          2.0756
CFD            Short           10060           2.0855
CFD            Short           18480           2.095
CFD            Short           24634           2.1071
CFD            Short           90738           2.1105
CFD            Short           2865            2.1624

(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                         05 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