Allotment of ordinary shares of 6 14/81 pence in Centrica plc ("Shares" and the
"Company", respectively) by a Person Discharging Managerial Responsibility
(PDMR) of the Company under its North American Employee Share Purchase Plan
("NAESPP").

The Bank of New York, (the "Administrator"), notified the Company on 5th June
2008 that the following shares were acquired/ allotted and held on behalf of the
following PDMR of the Company under the NAESPP.

                    Number               Number               Number               Aggregate Shares
                                                                                    held
                    of Partnership       of Matching*         of Matching*         Beneficially (across
                                                                                    all accounts
                    Shares acquired at   Shares allotted at   Shares allotted at   following allotment)
                     294p/ share on 21    298p/ share on 10    293p/ share on 8
                     May 2008             April 2008           May 2008
Persons Discharging
 Managerial
 Responsibility
Deryk King          252                  114                  114                  319,091

* The Matching element relates to the Partnership Shares acquired by Deryk King
on 10 April 2006 and on 8 May 2006.

The NAESPP operates as follows

-- Each month the Administrator uses participants' contributions (which are
from 1% to 5% of base salary but may not exceed $10,000 per participant
per year) to purchase shares in the market. These shares are called
'Partnership Shares'. Participants may hold both fractional and whole
Partnership Shares.

-- For every two Partnership Shares the participants still own after two
years, the Company awards one free share. These are called 'Matching
Shares'.

-- Participants may change their monthly savings rate whenever they wish.
However, Directors and others bound by the Company's Securities Dealing
Code (the "Code") may not make such a change during a close period or
when otherwise prohibited from dealing by the Code.

-- The NAESPP is only open to employees of the Company based in Canada and
the United States. No other Directors or PDMRs of the Company are
participants in the NAESPP.

Julia Foo
Centrica plc
01753 494016

Copyright Business Wire 2008