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               19 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     235,597,195     6.35%      2,721,495     0.07%
securities
(2) Derivatives   20,865,037     0.56%      2,916,658     0.08%
(other than
options)
(3) Options and      195,600     0.01%        195,600     0.01%
agreements to
purchase/sell
Total            256,657,832     6.91%      5,833,753     0.16%

(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         179,201               3.1993
Purchase         806                   3.2875
Purchase         343,028               3.1859
Purchase         3,125                 3.2875
Purchase         25,591                3.2875
Purchase         2,455                 3.2875
Purchase         136                   3.2875
Purchase         384,706               3.2150
Purchase         594,817               3.1992
Purchase         107,415               3.2875
Purchase         37,024                3.1991
Purchase         17,077                3.1996
Purchase         9,847                 3.2742
Purchase         25,058                3.1995
Purchase         17,526                3.1996
Purchase         4,590                 3.2875
Purchase         32,292                3.1993
Purchase         2,228                 3.2875
Purchase         315,767               3.2138
Purchase         267,497               3.1820
Purchase         296,416               3.2107
Purchase         97,938                3.2875
Purchase         5,016                 3.1550
Purchase         900                   3.1600
Purchase         9,374                 3.1680
Purchase         460,878               3.1859
Purchase         376,277               3.1802
Purchase         12,643                3.1997
Purchase         3,820                 3.1603
Purchase         4,314                 Transfer
Purchase         47,665                3.1776
Purchase         1,684                 3.1550
Purchase         25,104                3.1659
Purchase         9,833                 3.2196
Purchase         10,501                3.2875
Purchase         211,574               3.2584
Purchase         40,263                3.2742
Purchase         42,871                3.2550
Purchase         2,215                 3.2875
Purchase         885                   3.2742
Purchase         12,134                3.1997
Purchase         12,077                3.2875
Purchase         12,559                3.2742
Purchase         12,464                3.2742
Purchase         175,482               3.2875
Purchase         6,940                 3.2875
Purchase         6,490                 3.2742
Purchase         38,719                3.2875
Purchase         4,983                 3.2742
Purchase         111,166               3.2369
Purchase         8,409                 3.2742
Purchase         4,464                 3.1815
Purchase         113,909               3.2369
Purchase         6,627                 3.2742
Purchase         10,886                3.2742
Purchase         12,356                3.2875
Purchase         1,733                 3.2550
Purchase         43,755                3.2742
Purchase         42,080                3.2875
Purchase         4,213                 3.2003
Purchase         12,849                3.2742
Purchase         3,296                 3.2009
Purchase         4,321                 3.2742
Purchase         9,128                 3.2742
Purchase         182,474               3.2742
Sale             4,546                 3.1808
Sale             4,500                 3.2031
Sale             42,871                3.2550
Sale             108,677               3.1931
Sale             31,186                3.1808
Sale             191,329               3.2464
Sale             114,175               3.2560
Sale             280,714               3.2875
Sale             900                   3.1600
Sale             5,760                 3.1900
Sale             3,713                 3.1808
Sale             10,501                3.2875
Sale             224,677               3.2825
Sale             6,989                 3.1808
Sale             1,733                 3.2550
Sale             107,415               3.2875
Sale             1,483                 3.2875
Sale             123                   3.1628
Sale             64,788                3.2246
Sale             42,371                3.2608
Sale             2,910                 3.1900
Sale             15,375                3.1833

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          900           3.16
CFD            Long          108677        3.193
CFD            Long          74242         3.2194
CFD            Long          54298         3.2195
CFD            Long          9833          3.2197
CFD            Long          64788         3.2245
CFD            Long          191329        3.2463
CFD            Long          114175        3.2559
CFD            Long          42371         3.2608
CFD            Long          224677        3.2825
CFD            Short         6700          3.155
CFD            Short         900           3.16
CFD            Short         3820          3.1602
CFD            Short         9374          3.1679
CFD            Short         47665         3.1776
CFD            Short         376277        3.1802
CFD            Short         267497        3.1819
CFD            Short         803906        3.1858
CFD            Short         234096        3.2093
CFD            Short         62320         3.2156
CFD            Short         9833          3.2196
CFD            Short         211574        3.2583

(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 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