Director/PDMR Shareholding

Centrica PLC
                  Purchase of ordinary shares of 6 14/81 pence in Centrica plc ('Shares' and the
'Company', respectively) by Directors of the Company and Persons Discharging
Managerial Responsibility (PDMRs) under its Share Incentive Plan ('SIP').

The SIP trustee, Equiniti Share Plan Trustees Limited (the 'Trustee'), notified
the Company on 20 August 2008 that:

(1) The following Directors and other Persons Discharging Managerial
Responsibility for the Company acquired Shares under the SIP on 19 August 2008
held through the Trustee:

-0-
*T
                                 Number                    Aggregate Shares held
                                 of Shares                 Beneficially (across all accounts
Directors                        Acquired*                 following acquisition)
Phil Bentley                     61                        700,044
Sam Laidlaw                      61                        342,476
Nick Luff                        61                        200,753

Persons Discharging Managerial
 Responsibility
Grant Dawson                     61                        331,769
Catherine May                    61                        6,679
Anne Minto                       61                        232,035
Chris Weston                     61                        154,087
*T

* The 'Number of Shares Acquired' includes 41 Partnership shares acquired at
306.00 pence per share and 20 Matching shares acquired at 307.17 pence per
share. Both Partnership and Matching elements are registered in the name of the
Trustee.

(2) They had transferred 10,000 ordinary shares of 6 14/81 pence each from
Equiniti Corporate Nominees Limited AESOP1 (Allocated shares) to Equiniti
Corporate Nominees Limited AESOP2 (Unallocated shares). The transfer was made
following the forfeiture of shares, under the rules of the SIP, by participants
who have left the group since the last purchase and the shares had been used
towards August's allocation of Matching shares. The Directors and PDMRs listed
above, together with some 5,041 other employees, are participants in the SIP and
are potentially interested in the remaining 3,882 shares held by Equiniti
Corporate Nominee Limited AESOP2 left following the purchase.

The SIP operates as follows

    --  Each month the Trustee uses participants' contributions (which may not
        exceed £125 per participant per month) to purchase shares in the market.
        These shares are called 'Partnership Shares'.

    --  At the same time the Company allots to participants via the Trustee one
        'Matching Share' for every two partnership shares purchased that month
        (up to a maximum of 20 matching shares per month).

    --  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.

Julia Foo
Centrica plc
01753 494016