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               17 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     229,198,643     6.17%      4,559,208     0.12%
securities
(2) Derivatives   22,164,424     0.60%      2,182,540     0.06%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            251,363,067     6.77%      6,741,748     0.18%

(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         5,497                 3.2552
Purchase         187,390               3.2881
Purchase         29,967                3.2859
Purchase         23,677                3.2686
Purchase         400                   3.2775
Purchase         6,052                 3.2555
Purchase         228,724               3.2758
Purchase         14,990                3.2552
Purchase         32,330                3.2916
Purchase         675,260               3.2813
Purchase         274,186               3.2552
Purchase         33,256                3.2532
Purchase         17,107                3.2552
Purchase         4,905                 3.2550
Purchase         2,245                 3.2552
Purchase         15,292                3.2552
Purchase         43,990                3.2895
Purchase         581                   Transfer
Purchase         11,961                3.2856
Purchase         82,603                3.2552
Purchase         88,978                3.2532
Purchase         7,846                 3.2552
Purchase         1,403                 3.2552
Purchase         14,812                3.2552
Purchase         7,934                 3.2552
Purchase         11,530                3.2552
Purchase         5,229                 3.2552
Sale             6,052                 3.2908
Sale             24,467                3.2963
Sale             400                   3.2775
Sale             43,266                3.2678
Sale             36,313                3.2842
Sale             361,348               3.2757
Sale             195,388               3.2861
Sale             175,553               3.2765
Sale             193,607               3.2689
Sale             9,110                 3.2939
Sale             1,250                 3.2900
Sale             17,229                3.2550
Sale             765                   3.2850
Sale             4,456                 3.2550
Sale             1,530                 3.2950
Sale             1,600                 3.2900
Sale             1,134                 3.2900
Sale             15,347                3.2550
Sale             47,419                3.2549
Sale             243,944               3.2708

NB: The below transactions which were previously disclosed have been cancelled
Deal Date     Purchase/Sale     Number of Securities     Price per unit (GBP)
16/09/2008    Sale              482,883                  3.3411
16/09/2008    Purchase          492,995                  3.3420

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          43266         3.2678
CFD            Long          193607        3.2688
CFD            Long          25813         3.2698
CFD            Long          247018        3.2702
CFD            Long          243944        3.2707
CFD            Long          335535        3.2761
CFD            Long          175553        3.2764
CFD            Long          400           3.2775
CFD            Long          318           3.2825
CFD            Long          36313         3.2841
CFD            Long          195388        3.286
CFD            Long          6052          3.2907
CFD            Long          9110          3.2939
CFD            Short         88978         3.2531
CFD            Short         33256         3.2532
CFD            Short         6052          3.2554
CFD            Short         23677         3.2686
CFD            Short         228724        3.2758
CFD            Short         400           3.2775
CFD            Short         675260        3.2812
CFD            Short         29967         3.2859
CFD            Short         187390        3.288
CFD            Short         43990         3.2894
CFD            Short         32330         3.2915

(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                         18 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