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               21 August 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     226,887,451     6.12%      6,471,717     0.17%
securities
(2) Derivatives   17,644,582     0.48%      3,673,725     0.10%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            244,532,033     6.59%     10,145,442     0.27%

(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 Securities Price per unit
                                    (GBP)
Purchase      4,897                 3.0775
Purchase      2,300                 3.0660
Purchase      66,382                3.0118
Purchase      7,137                 3.0775
Purchase      153,482               3.0520
Purchase      12,750                3.0829
Purchase      14,973                3.0253
Purchase      14,675                3.0658
Purchase      200                   3.0200
Purchase      81,120                3.0775
Purchase      61,645                3.0593
Purchase      4,499                 3.0123
Purchase      14,675                3.0657
Purchase      89,834                3.0177
Sale          200                   3.0200
Sale          8,000                 3.0185
Sale          15,389                3.0595
Sale          8,158                 3.0770
Sale          14,675                3.0658
Sale          2,300                 3.0660
Sale          153,857               3.0630
Sale          356                   3.0559
Sale          94,860                3.0483
Sale          89,834                3.0177
Sale          2,020                 3.0733
Sale          38,037                3.0738
Sale          102,656               3.0775
Sale          1,800                 3.0785
Sale          178                   3.0261
Sale          11,159                3.0738
Sale          89,834                3.0177
Sale          102,275               3.0652

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          8000          3.0184
CFD            Long          200           3.02
CFD            Long          82523         3.0203
CFD            Long          9279          3.0388
CFD            Long          94860         3.0482
CFD            Long          15389         3.0594
CFD            Long          153857        3.0629
CFD            Long          102275        3.0652
CFD            Long          2300          3.0659
CFD            Long          8158          3.077
CFD            Long          19344         3.0788
CFD            Long          21189         3.0805
CFD            Short         66382         3.0118
CFD            Short         200           3.02
CFD            Short         14973         3.0253
CFD            Short         153482        3.0519
CFD            Short         61645         3.0592
CFD            Short         14675         3.0657
CFD            Short         2300          3.0659
CFD            Short         12750         3.0828

(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)                 NO


Date of disclosure                         22 August 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)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk