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               11 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     231,463,780     6.24%      4,971,940     0.13%
securities
(2) Derivatives   21,681,495     0.58%      3,184,024     0.09%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            253,145,275     6.82%      8,155,964     0.22%

(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         65,261                3.1710
Purchase         1,381                 3.1710
Purchase         9,099                 3.1583
Purchase         2,320                 3.1774
Purchase         6,323                 3.1974
Purchase         30,600                3.2400
Purchase         4,395                 3.1710
Purchase         7,397                 3.1774
Purchase         35,771                3.1774
Purchase         139,993               3.1584
Purchase         97,311                3.1974
Purchase         21,262                3.1710
Purchase         429,677               3.1584
Purchase         9,250                 3.1974
Purchase         109,799               3.1774
Purchase         20,113                3.1974
Purchase         4,649                 3.1530
Purchase         349,340               3.1838
Purchase         10,906                3.1127
Purchase         245,605               3.1438
Purchase         94,028                3.1944
Purchase         700                   3.1900
Purchase         10,020                3.1912
Purchase         56,469                3.1958
Purchase         176,842               3.1874
Purchase         14,875                3.1553
Purchase         141,979               3.1687
Purchase         45,360                3.1529
Purchase         534                   Transfer
Purchase         298,685               3.1974
Purchase         6,487                 3.1774
Purchase         1,935                 3.2100
Purchase         26,235                3.1939
Purchase         4,895                 3.2000
Purchase         5,180                 3.1582
Purchase         1,295                 3.1773
Purchase         18                    3.1773
Purchase         3,597                 3.1974
Purchase         784                   3.1709
Purchase         2,418                 3.1525
Purchase         28,929                3.1584
Purchase         25,397                3.1584
Purchase         13,313                3.1583
Purchase         3,856                 3.1710
Purchase         17,650                3.1974
Purchase         13,762                3.1974
Purchase         2,693                 3.1773
Purchase         10,571                3.1583
Purchase         1,603                 3.1710
Purchase         3,393                 3.1773
Purchase         3,398                 3.1773
Purchase         2,021                 3.1710
Purchase         7,345                 3.1974
Purchase         5,054                 3.1774
Purchase         3,006                 3.1710
Purchase         19,806                3.1584
Purchase         2,023                 3.1710
Purchase         9,261                 3.1974
Purchase         13,328                3.1583
Sale             76,000                3.2521
Sale             56,476                3.1891
Sale             85,449                3.1931
Sale             24,097                3.1525
Sale             243                   3.1879
Sale             534                   Transfer
Sale             20,301                3.2150
Sale             700                   3.1900
Sale             50                    3.1929
Sale             15,256                3.1875
Sale             234,583               3.1520
Sale             3,112                 3.2220
Sale             94,130                3.1525
Sale             4,585                 3.1722

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          234583        3.152
CFD            Long          12832         3.1532
CFD            Long          4585          3.1721
CFD            Long          422721        3.1797
CFD            Long          56476         3.1891
CFD            Long          700           3.19
CFD            Long          6120          3.1921
CFD            Long          85449         3.1931
CFD            Long          20203         3.1939
CFD            Long          3112          3.222
CFD            Short         10906         3.1127
CFD            Short         245605        3.1437
CFD            Short         45360         3.1528
CFD            Short         4649          3.1529
CFD            Short         14875         3.1553
CFD            Short         141979        3.1686
CFD            Short         349340        3.1837
CFD            Short         176842        3.1874
CFD            Short         700           3.19
CFD            Short         10020         3.1911
CFD            Short         94028         3.1944
CFD            Short         56469         3.1957

(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                         12 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)


Notes

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