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               30 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     237,549,921     6.40%      3,751,527     0.10%
securities
(2) Derivatives   21,624,424     0.58%      2,729,308     0.07%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            260,044,330     7.00%      6,480,835     0.17%%

(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           Price per unit
                   Securities          (GBP)
Purchase           1,300               3.1135
Purchase           112,514             3.1338
Purchase           445                 Transfer
Purchase           3,000               3.0895
Purchase           1,271               3.0780
Purchase           267                 Transfer
Purchase           73,008              3.0975
Purchase           1,773               3.1400
Purchase           62,675              3.1119
Purchase           720,400             3.2174
Purchase           89                  Transfer
Purchase           2,765               3.1400
Purchase           553,311             3.1400
Purchase           54,571              3.1280
Purchase           250,572             3.1223
Purchase           1,681               3.1400
Purchase           107,491             3.1056
Purchase           21,671              3.1087
Purchase           76,400              3.1400
Purchase           9,232               3.1400
Purchase           110,332             3.1400
Purchase           1,422               3.1400
Purchase           18,299              3.1194
Purchase           51,660              3.1400
Purchase           68,514              3.1194
Purchase           1,812               3.0950
Purchase           14,206              3.1400
Purchase           16,708              3.1082
Purchase           30,645              3.1400
Purchase           185,985             3.1400
Sale               61,008              3.1400
Sale               45,253              3.1247
Sale               450                 3.2283
Sale               2,001               3.1400
Sale               2,214               3.1400
Sale               8,610               3.1400
Sale               376,528             3.1281
Sale               89                  Transfer
Sale               7,744               3.1203
Sale               112,514             3.1338
Sale               40,296              3.1275
Sale               776                 3.2429
Sale               21,000              3.1504
Sale               52,508              3.1375
Sale               1,681               3.1400
Sale               246,938             3.1248
Sale               42,180              3.1400
Sale               37,360              3.1400
Sale               28,715              3.1400
Sale               9,355               3.1400
Sale               922                 3.0883
Sale               23,269              3.1400
Sale               122                 3.1450
Sale               1,431               3.1208
Sale               4,446               3.1400
Sale               553,311             3.1400
Sale               2,765               3.1400
Sale               553,311             3.1400
Sale               3,000               3.0895
Sale               445                 Transfer
Sale               267                 Transfer
Sale               3,000               3.1350
Sale               1,271               3.1136
Sale               1,300               3.1135
Sale               178                 3.0958
Sale               112,514             3.1338

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          3000          3.0895
CFD            Long          21671         3.1087
CFD            Long          1300          3.1134
CFD            Long          1271          3.1135
CFD            Long          45253         3.1246
CFD            Long          246938        3.1247
CFD            Long          40296         3.1274
CFD            Long          376528        3.128
CFD            Long          52508         3.1374
CFD            Long          38650         3.14
CFD            Long          21000         3.1504
CFD            Short         1271          3.0779
CFD            Short         3000          3.0895
CFD            Short         73008         3.0974
CFD            Short         107491        3.1056
CFD            Short         62675         3.1118
CFD            Short         1300          3.1134
CFD            Short         25569         3.1155
CFD            Short         4006          3.1218
CFD            Short         250572        3.1223
CFD            Short         209030        3.1255
CFD            Short         29002         3.1388
CFD            Short         120406        3.14

(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)                 YES


Date of disclosure                         01 October 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)


SUPPLEMENTAL FORM 8

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)


OPEN POSITIONS (Note 1)
Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,
                              or derivative relates                   European etc.
Option            Purchased   869,985                4.0304           EURO          18/12/2008

Notes

1. Where there are open option positions or open derivative positions (except for CFD's), full details should be given.
Full details of any existing agreements to purchase or to sell should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover
Panel's website at www.thetakeoverpanel.org.uk