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               29 September 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     237,354,852     6.39%      2,609,337     0.07%
securities
(2) Derivatives   21,598,671     0.58%      2,664,640     0.07%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            259,823,508     7.00%      5,273,977     0.14%

(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           39,722              3.2239
Purchase           12,506              3.2239
Purchase           1,531               3.1900
Purchase           304,400             3.1900
Purchase           214,384             3.2155
Purchase           108,900             3.2170
Purchase           159,374             3.2124
Purchase           100,000             3.1900
Purchase           155,130             3.2125
Purchase           77,565              3.2101
Purchase           155,130             3.2125
Purchase           470                 3.2199
Purchase           8,459               3.2153
Purchase           24,606              3.2069
Purchase           18,279              3.1962
Purchase           400                 3.2188
Purchase           3,302               3.1900
Purchase           2,827               3.2155
Purchase           21,399              3.1900
Purchase           3,610               3.1900
Purchase           2,623               3.1947
Purchase           5,926               3.1900
Purchase           4,430               3.1900
Purchase           45,781              3.2825
Purchase           106,995             3.1900
Purchase           53,007              3.1900
Sale               2,000               3.2170
Sale               61,891              3.2117
Sale               197,187             3.2186
Sale               2,500               3.2072
Sale               4,600               3.2675
Sale               53,939              3.2054
Sale               827                 3.2170
Sale               39,722              3.1900
Sale               80,710              3.1900
Sale               53,007              3.1900
Sale               79,677              3.2071
Sale               85,404              3.2234
Sale               1,660               3.1978
Sale               296,569             3.1900
Sale               400                 3.2188
Sale               965                 3.2251
Sale               170,609             3.2136
Sale               3,750               3.1928
Sale               2,300               3.2128
Sale               45,781              3.2825

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          53939         3.2054
CFD            Long          15730         3.2069
CFD            Long          66447         3.2071
CFD            Long          61891         3.2117
CFD            Long          170609        3.2136
CFD            Long          2827          3.217
CFD            Long          197187        3.2185
CFD            Long          400           3.2187
CFD            Long          85404         3.2234
CFD            Short         6692          3.19
CFD            Short         18279         3.1962
CFD            Short         24606         3.2069
CFD            Short         159374        3.2123
CFD            Short         8459          3.2153
CFD            Short         2827          3.2154
CFD            Short         214384        3.2155
CFD            Short         108900        3.217
CFD            Short         400           3.2187
CFD            Short         470           3.2199
CFD            Short         12506         3.2238

(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                         30 September 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