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 20 July 2007 that:

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

-0-
*T
                                 Number                    Aggregate Shares held
                                 of Shares                 Beneficially (across all accounts
Directors                        Acquired*                 following acquisition)
Phil Bentley                     49                        613,037
Sam Laidlaw                      49                        266,703
Jake Ulrich                      49                        860,933

Persons Discharging Managerial
 Responsibility
Grant Dawson                     49                        277,663
Catherine May                    48                        5,941
Anne Minto                       49                        195,407
Chris Weston                     49                        133,692
*T

* The 'Number of Shares Acquired' includes 33 Partnership shares (32 for
Catherine May due to a lower residual balance) acquired at 379.75 pence per
share and 16 Matching shares acquired at 381.50 pence per share. Both
Partnership and Matching elements are registered in the name of the Trustee.

(2) They had transferred 6,828 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 July's allocation of Matching shares. The Directors listed
above, together with some 5,333 other employees, are participants in the SIP and
are potentially interested in the remaining 24 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.