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 19 September 2005 that:

(1) The following Directors of and other Persons Discharging Managerial
Responsibility for the Company acquired Shares under the SIP on 19 September
2005 held through the Trustee:

                                Number                   Aggregate Shares held
                                of Shares                Beneficially (across all accounts
Directors                       Acquired*                following acquisition)
Phil Bentley                    69                       257,888
Mark Clare                      69                       705,943
Sir Roy Gardner                 69                       2,175,675
Jake Ulrich                     69                       594,334

Persons Discharging Managerial
 Responsibility
Grant Dawson                    69                       280,152
Anne Minto                      69                       42,995
Chris Weston                    52                       1,992


* The 'Number of Shares Acquired' includes 49 Partnership shares (except for
Chris Weston which includes 35 Partnership shares) acquired at 254.75 pence and
20 Matching shares (except for Chris Weston which includes 17 Matching shares)
acquired at 256.33 pence. Both Partnership and Matching elements are registered
in the name of the Trustee.

(2) They had transferred 7,709 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 September's allocation of Matching shares. The Directors
listed above, together with some 5,857 other employees, are potential
participants in the Plan and are to be treated as interested in the remaining
546 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.