Director/PDMR Shareholding

Centrica PLC
                  

Allotment of ordinary shares of 6 14/81 pence in Centrica plc ('Shares' and the
'Company', respectively) by a Person Discharging Managerial Responsibility
(PDMR) of the Company under its North American Employee Share Purchase Plan
('NAESPP').

The Bank of New York, (the 'Administrator'), notified the Company on 11 March
2008 that the following shares were required to meet the Matching element on the
Partnership Shares acquired by Deryk King on 7 February 2006. The shares were
allotted on 7 February 2008 and are held by the Administrator on behalf of Mr
King:

-0-
*T
                                 Number                    Aggregate Shares held
                                 of Matching               Beneficially (across all accounts
                                 Shares allotted*          following allotment)
Persons Discharging Managerial
 Responsibility
Deryk King                       112.99215                 274,397.829365
*T

* The 'Number of Matching Shares allotted' were at a price of 332 pence per
share.

The NAESPP operates as follows

    --  Each month the Administrator uses participants' contributions (which are
        from 1% to 5% of base salary but may not exceed $10,000 per participant
        per year) to purchase shares in the market. These shares are called
        'Partnership Shares'. Participants may hold both fractional and whole
        Partnership Shares.

    --  For every two Partnership Shares the participants still own after two
        years, the Company awards one free share. These are called 'Matching
        Shares'.

    --  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.

    --  The NAESPP is only open to employees of the Company based in Canada and
        the United States. No other Directors or PDMRs of the Company are
        participants in the NAESPP.

Purchase of ordinary shares of 6 14/81 pence in Centrica plc ('Shares' and the
'Company', respectively) by a Person Discharging Managerial Responsibility
(PDMR) of the Company under its North American Employee Share Purchase Plan
('NAESPP').

The Bank of New York, (the 'Administrator'), notified the Company on 11 March
2008 that they had acquired Shares on 29 February 2008 to be held on behalf of
the following PDMR of the Company under the NAESPP:

-0-
*T
                                 Number                    Aggregate Shares held
                                 of Partnership            Beneficially (across all accounts
                                 Shares acquired*          following acquisition)
Persons Discharging Managerial
 Responsibility
Deryk King                       226.08737                 274,623.916735
*T

* The 'Number of Partnership Shares acquired' were purchased at 314.75 pence.

The NAESPP operates as follows

    --  Each month the Administrator uses participants' contributions (which are
        from 1% to 5% of base salary but may not exceed $10,000 per participant
        per year) to purchase shares in the market. These shares are called
        'Partnership Shares'. Participants may hold both fractional and whole
        Partnership Shares.

    --  For every two Partnership Shares the participants still own after two
        years, the Company awards one free share. These are called 'Matching
        Shares'.

    --  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.

    --  The NAESPP is only open to employees of the Company based in Canada and
        the United States. No other Directors or PDMRs of the Company are
        participants in the NAESPP.

Julia Foo
Centrica plc
01753 494016