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 under its Share Incentive
Plan ('SIP').

The SIP trustee, Hill Samuel ESOP Trustees Limited (the 'Trustee'), notified the
Company on 22 January 2007 that:

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

-0-
*T
                                Number                   Aggregate Shares held
                                of Shares                Beneficially (across all accounts
Directors                       Acquired*                following acquisition)
Phil Bentley                    51                       460,931
Sam Laidlaw                     52                       200,158
Jake Ulrich                     51                       719,392

Persons Discharging Managerial
 Responsibility
Grant Dawson                    51                       219,566
Anne Minto                      51                       115,977
Chris Weston                    51                       75,891
*T

* The 'Number of Shares Acquired' includes 34 Partnership shares (Sam Laidlaw
received 35 partnership shares due to a slightly higher cash balance) acquired
at 361.25 pence per share and 17 Matching shares acquired at 360.25 pence per
share. Both Partnership and Matching elements are registered in the name of the
Trustee.

(2) They had transferred 9,963 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 January's allocation of Matching shares. The Directors listed
above, together with some 5,447 other employees, are participants in the Plan
and are potentially interested in the remaining 5,289 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.