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               21 October 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     237,653,536     6.40%      2,781,509     0.07%
securities
(2) Derivatives   21,095,143     0.57%      1,140,168     0.03%
(other than
options)
(3) Options and      869,985     0.02%              0     0.00%
agreements to
purchase/sell
Total            259,618,664     6.99%      3,921,677     0.11%

(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           2,488               3.0615
Purchase           390,057             3.1359
Purchase           621                 3.2050
Purchase           18,619              3.0912
Purchase           11,874              3.1938
Purchase           300                 3.1350
Purchase           21,738              3.0887
Purchase           290,807             3.1373
Purchase           17,500              3.1028
Purchase           96,024              3.1286
Purchase           14,676              3.0700
Purchase           2,400               3.0800
Purchase           14,137              3.1900
Purchase           18,000              3.1042
Purchase           2,756               3.1900
Purchase           73,515              3.0700
Purchase           32,300              3.1300
Purchase           108,324             3.1097
Purchase           4,210               3.1275
Purchase           10,440              3.1045
Sale               5,108               3.1022
Sale               300                 3.1350
Sale               7,568               3.1022
Sale               17,477              3.1022
Sale               67,939              3.0677
Sale               15,873              3.1022
Sale               32,498              3.1022
Sale               21,609              3.0789
Sale               20,696              3.1022
Sale               2,366               3.1022
Sale               16,784              3.1022
Sale               11,116              3.1022
Sale               18,007              3.1022
Sale               3,872               3.1022
Sale               32,703              3.0789
Sale               13,304              3.1022
Sale               3,466               3.1022
Sale               58,234              3.0790
Sale               900                 3.0780
Sale               1,134               3.0780
Sale               4,903               3.0787
Sale               7,247               3.0788
Sale               9,554               3.0788
Sale               7,395               3.0788
Sale               5,231               3.0787
Sale               4,161               3.0787
Sale               4,254               3.0787
Sale               2,148               3.1022
Sale               4,902               3.1022
Sale               20,757              3.0789
Sale               59,420              3.1084
Sale               337,742             3.0790
Sale               32,447              3.1042
Sale               359,694             3.1591
Sale               1,142               3.1583
Sale               17,358              3.1403
Sale               1,820               Transfer
Sale               6,375               3.0889
Sale               2,488               3.0620
Sale               4,210               3.1275
Sale               18,984              3.1118
Sale               2,400               3.0800
Sale               356                 3.0880
Sale               4,210               3.1275
Sale               33,821              3.0790
Sale               101,704             3.0789

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          2488          3.062
CFD            Long          67939         3.0677
CFD            Long          63600         3.0689
CFD            Long          2400          3.08
CFD            Long          6375          3.0889
CFD            Long          59420         3.1084
CFD            Long          18984         3.1117
CFD            Long          300           3.135
CFD            Long          17358         3.1403
CFD            Long          359694        3.1591
CFD            Short         2488          3.0614
CFD            Short         2400          3.08
CFD            Short         21738         3.0886
CFD            Short         18619         3.0912
CFD            Short         17500         3.1028
CFD            Short         386233        3.1042
CFD            Short         7554          3.1093
CFD            Short         96024         3.1285
CFD            Short         32300         3.13
CFD            Short         300           3.135
CFD            Short         390057        3.1359
CFD            Short         290807        3.1372

(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                         22 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