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               16 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     228,760,788     6.16%      5,160,874     0.14%
securities
(2) Derivatives   22,763,827     0.61%      3,117,355     0.08%
(other than
options)
(3) Options and            0     0.00%              0     0.00%
agreements to
purchase/sell
Total            251,524,615     6.78%      8,278,229     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         2,669                 3.3677
Purchase         43,314                3.3676
Purchase         489,796               3.3468
Purchase         60,567                3.3707
Purchase         19,838                3.3661
Purchase         18,049                3.3707
Purchase         145,944               3.3468
Purchase         44,512                3.3955
Purchase         1,709                 3.3707
Purchase         30,301                3.3468
Purchase         1,403                 3.3200
Purchase         3,089                 3.3392
Purchase         9,217                 3.3955
Purchase         11,900                3.3468
Purchase         3,191                 3.3955
Purchase         4,226                 3.3955
Purchase         13,748                3.3468
Purchase         1,882                 3.3660
Purchase         12,913                3.3676
Purchase         148,603               3.3723
Purchase         8,445                 3.1280
Purchase         60,020                3.3467
Purchase         2,647                 3.3305
Purchase         75,659                3.3234
Purchase         141,099               3.3213
Purchase         492,995               3.3420
Purchase         2,004                 3.3405
Purchase         66,556                3.3661
Purchase         15,614                3.3364
Purchase         149,340               3.3955
Purchase         1,800                 3.3250
Purchase         84,614                3.2822
Purchase         324                   Transfer
Purchase         71,940                3.3446
Purchase         7,834                 3.3200
Purchase         6,630                 3.3200
Purchase         15,152                3.3200
Purchase         4,108                 3.3661
Purchase         492,995               3.3420
Purchase         783,131               3.3391
Purchase         16,882                3.3125
Purchase         3,247                 3.3707
Purchase         6,391                 3.3494
Purchase         3,421                 3.3660
Purchase         4,941                 3.3494
Purchase         10,892                3.3392
Purchase         2,185                 3.3392
Purchase         3,572                 3.3660
Purchase         3,741                 3.3707
Purchase         8,011                 3.3955
Purchase         6,215                 3.3494
Purchase         2,458                 3.3200
Purchase         7,633                 3.3494
Purchase         1,247                 3.3392
Purchase         6,307                 3.3494
Purchase         31,728                3.3391
Purchase         4,938                 3.3494
Purchase         1,233                 3.3675
Purchase         1,815                 3.3676
Purchase         12,944                3.3468
Purchase         3,102                 3.3707
Purchase         2,253                 3.3675
Purchase         4,502                 3.3955
Purchase         6,235                 3.3955
Purchase         2,778                 3.3660
Purchase         21,149                3.3200
Purchase         2,523                 3.3707
Purchase         26,231                3.3468
Purchase         20,327                3.3468
Purchase         13,949                3.3468
Purchase         1,735                 3.3707
Purchase         1,908                 3.3660
Purchase         1,251                 3.3675
Purchase         4,288                 3.3955
Purchase         2,327                 3.3676
Sale             1,443                 3.3900
Sale             89                    3.3404
Sale             57,918                3.3367
Sale             2,647                 3.3382
Sale             330,812               3.3543
Sale             175,796               3.3275
Sale             482,883               3.3411
Sale             244,397               3.3422
Sale             3,000                 3.3575
Sale             1,000                 3.3228
Sale             1,182                 3.3565
Sale             1,800                 3.3250
Sale             4,030                 3.3200
Sale             14,440                3.2200
Sale             1,620                 3.3428
Sale             800,013               3.2200
Sale             1,250                 3.3503
Sale             10,000                3.3195
Sale             281,141               3.3439
Sale             379,973               3.3397
Sale             8,903                 3.3385
Sale             31,728                3.2200
Sale             232,877               3.3232
Sale             482,883               3.3411
Sale             28,075                3.3794
Sale             3,000                 3.3478

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          10000         3.3195
CFD            Long          232877        3.3231
CFD            Long          1800          3.325
CFD            Long          175796        3.3274
CFD            Long          57918         3.3366
CFD            Long          2647          3.3382
CFD            Long          8903          3.3384
CFD            Long          379973        3.3396
CFD            Long          85732         3.3405
CFD            Long          965766        3.341
CFD            Long          158665        3.343
CFD            Long          3896          3.3431
CFD            Long          341304        3.3437
CFD            Long          281141        3.3439
CFD            Long          330812        3.3543
CFD            Short         8445          3.1279
CFD            Short         84614         3.2821
CFD            Short         141099        3.3213
CFD            Short         75659         3.3233
CFD            Short         1800          3.325
CFD            Short         2647          3.3304
CFD            Short         15614         3.3364
CFD            Short         2004          3.3404
CFD            Short         985990        3.3419
CFD            Short         71940         3.3446
CFD            Short         60020         3.3466

(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                         17 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