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 December 2007 that:

(1) The following Directors and other Persons Discharging Managerial
Responsibility for the Company acquired Shares under the SIP on 19 December 2007
held through the Trustee:

-0-
*T
                                 Number                    Aggregate Shares held
                                 of Shares                 Beneficially (across all accounts
Directors                        Acquired*                 following acquisition)
Phil Bentley                     51                        623,718
Sam Laidlaw                      52                        341,964
Nick Luff                        51                        200,255
Jake Ulrich                      51                        861,229

Persons Discharging Managerial
 Responsibility
Grant Dawson                     51                        277,960
Catherine May                    51                        6,197
Anne Minto                       51                        195,698
Chris Weston                     51                        133,947
*T

* The 'Number of Shares Acquired' includes 34 Partnership shares (35 Partnership
shares for Sam Laidlaw with a higher residual balance) acquired at 359.75 pence
per share and 17 Matching shares acquired at 366.42 pence per share. Both
Partnership and Matching elements are registered in the name of the Trustee.

(2) They had transferred 9,000 ordinary shares of 6 14/81 pence each from Lloyds
TSB Registrars Corporate Nominee Limited AESOP1 (Allocated shares) to Lloyds TSB
Registrars Corporate Nominee 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 December's allocation of Matching shares. The Directors listed
above, together with some 5,168 other employees, are participants in the SIP and
are potentially interested in the remaining 570 shares held by Lloyds TSB
Registrars 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.