Director/PDMR Shareholding

Centrica PLC
                  

Centrica plc (the Company) - Directors' and other PDMRs' share interests

Centrica announces the following transactions in respect of its ordinary share
capital of 6 14/81 pence each by Executive Directors and/or other Persons
Discharging Managerial Responsibility (PDMRs).

1) Release and sale of shares from the Long Term Incentive Scheme (LTIS)

On 3 April 2008, a total of 3,267,332 Centrica ordinary shares of 6 14/81 pence
each in respect of awards made under the terms of the LTIS in April 2005 were
transferred to participants, including two Executive Directors and four other
PDMRs. These awards, which were subject to performance conditions*, were
released by the trustee of the LTIS following the completion of the three-year
performance period.

* The performance condition for the LTIS award in 2005 is linked to the
Company's total shareholder return (TSR) relative to the returns of its FTSE 100
comparator group. The maximum award only vests if the Company's TSR over the
performance period achieves upper quartile ranking (25th position or above)
against the other 99 companies in the LTIS comparator group. For the award made
in 2005, at the conclusion of the performance period on 31 March 2008, the
Company was ranked in 45th position in the LTIS comparator group and,
accordingly, 57.5% of the award was released.

On release, participants are liable to pay income tax at their marginal rate and
National Insurance contributions at 1% on the value of the shares. Accordingly,
the Executive Directors and other PDMRs sold shares (41%) to meet these
liabilities. The shares were sold at 305.301p on 3 April 2008.

The specific details of the release and disposals relating to the Executive
Directors and other PDMRs are as follows:

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                       Shares released Shares          Net number of shares
                                       sold             transferred to participant
---------------------- --------------- --------------- -----------------------------
Executive Directors
====================== --------------- --------------- -----------------------------
Phil Bentley                    95,246          39,051                        56,195
---------------------- --------------- --------------- -----------------------------
Jake Ulrich                     97,132          39,825                        57,307
---------------------- --------------- --------------- -----------------------------
Other PDMRs
====================== --------------- --------------- -----------------------------
Grant Dawson                    64,126          26,292                        37,834
---------------------- --------------- --------------- -----------------------------
Deryk King                      73,556          30,158                        43,398
---------------------- --------------- --------------- -----------------------------
Anne Minto                      60,542          24,823                        35,719
---------------------- --------------- --------------- -----------------------------
Chris Weston                    33,320          13,662                        19,658
---------------------- --------------- --------------- -----------------------------
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2) Long Term Incentive Scheme Allocations

On 3 April 2008 conditional allocations of ordinary shares in the Company were
made by the trustee of the LTIS to the following Executive Directors and other
PDMRs:

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                         TSR shares     EPS shares     Total number of shares
                                                     in conditional allocation
---------------------- -------------- -------------- --------------------------
Executive Directors
====================== -------------- -------------- --------------------------
Phil Bentley                  194,114        194,113                    388,227
---------------------- -------------- -------------- --------------------------
Sam Laidlaw                   302,579        302,579                    605,158
---------------------- -------------- -------------- --------------------------
Nick Luff                     185,185        185,185                    370,370
---------------------- -------------- -------------- --------------------------
Other PDMRs
====================== -------------- -------------- --------------------------
Grant Dawson                  102,307        102,306                    204,613
---------------------- -------------- -------------- --------------------------
Deryk King                    129,588        129,588                    259,176
---------------------- -------------- -------------- --------------------------
Catherine May                  72,569         72,569                    145,138
---------------------- -------------- -------------- --------------------------
Anne Minto                     96,305         96,304                    192,609
---------------------- -------------- -------------- --------------------------
Chris Weston                  120,040        120,039                    240,079
---------------------- -------------- -------------- --------------------------
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The allocation price for calculating the number of shares was 302.4p, being the
average closing share price over the five business days immediately preceding
the allocation date of 3 April 2008.

The conditional allocations shown above represent the maximum potential award
possible if all performance criteria are met at the end of the three-year
performance period. If and to the extent that the performance criteria are
satisfied at the conclusion of the performance period, the relevant number of
shares will be transferred to executives at the trustee's discretion.

The percentage of the allocation eventually to vest is dependent on the
satisfaction of performance criteria over a three-year performance period
commencing on 3 April 2008:

    --  the EPS shares will be subject to a performance condition based on the
        Company's growth in earnings per share (EPS)* relative to the growth in
        the retail prices index (RPI) (All Items) over three financial years.
        Growth in earnings per share (EPS) will be calculated by comparing the
        Company's EPS figure for the financial period preceding the date of
        allocation with that for the financial period three years later**; and

    --  the TSR shares will be determined by the Company's Total Shareholder
        Return (TSR) performance relative to the other companies comprising the
        LTIS comparator group - the FTSE 100 at the start of the three-year
        performance period. At the end of the performance period, the TSR
        performance condition will be measured, the same calculation made for
        all the other 99 companies in the LTIS comparator group and a ranking
        list will be compiled***.

* EPS is calculated as the Company's earnings per share, adjusted for
exceptional items and certain re-measurements arising on the application of IAS
32 and IAS 39.

** In respect of three quarters of the EPS shares allocated to the executive
directors and all of the EPS shares allocated to the other PDMRs, the maximum
allocation of such EPS shares only vests if the Company's growth in EPS exceeds
growth in RPI by 30% or more. No shares vest if the growth in EPS over RPI is
below 9%. Between 9% and 30% shares vest on a scale from 25% to 100%. In respect
of the balance of one quarter of EPS shares allocated to the executive
directors, the maximum allocation of such EPS shares only vests if the Company's
growth in EPS exceeds growth in RPI by 40% or more. No shares vest if the growth
in EPS over RPI is below 20%. Between 20% and 40% shares will vest pro rata on a
scale from 25% to 100%.

***The maximum allocation of TSR shares only vests if the Company's TSR over the
performance period achieves upper quintile ranking (20th position or above)
against the comparator group. No shares vest if the TSR ranking over the
performance period is sub-median (below 50th position) against the comparator
group. From 20th to 50th position, shares vest on a scale from 100% to 25%.

3) Grant of Sharesave Options

Options were granted at an option price of 255.27p per share to Nick Luff and
Grant Dawson under the terms of the Centrica Sharesave scheme on 3 April 2008.
Each was granted an option over 6,581 shares which will be exercisable between 1
June 2013 and 30 November 2013.

4) Current Share Interests

Following the LTIS release, the LTIS allocation and the grant of Sharesave
options, the Executive Directors and other PDMRs retain an interest in the share
capital of the Company as follows:

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Directors' and PDMRs' interests in shares
------------------------------------------------------------------------------
            Ordinary  Share       LTIS -         DMSS -         DMSS -
             shares    Incentive   conditional   total number   total matching
             of        Plan        upon           of shares      shares
            6 14/81p               performance    invested
----------- --------- ----------- -------------- -------------- --------------
Executive
 Directors
=========== --------- ----------- -------------- -------------- --------------
Phil
 Bentley      609,721       4,860        962,927         65,507        181,727
----------- --------- ----------- -------------- -------------- --------------
Sam Laidlaw   252,795         893      1,496,478         88,451        272,431
----------- --------- ----------- -------------- -------------- --------------
Nick
Luff          149,888         431        646,915         50,112        169,871
----------- --------- ----------- -------------- -------------- --------------
Jake Ulrich   849,588       4,755        574,700         64,368        181,726
----------- --------- ----------- -------------- -------------- --------------

----------- --------- ----------- -------------- -------------- --------------
Other PDMRs
=========== --------- ----------- -------------- -------------- --------------
Grant
 Dawson       279,078       4,861        476,283         32,030         89,742
----------- --------- ----------- -------------- -------------- --------------
Deryk King    264,483 6,346.92*          577,536         47,192        131,407
----------- --------- ----------- -------------- -------------- --------------
Catherine
May                 -         623        292,454          5,750         16,023
----------- --------- ----------- -------------- -------------- --------------
Anne Minto    196,702       4,209        448,938         30,681         84,870
----------- --------- ----------- -------------- -------------- --------------
Chris
 Weston       118,871       3,511        504,919         31,399         62,798
----------- --------- ----------- -------------- -------------- --------------
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*held under the North American Employee Share Purchase Plan

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Directors' and PDMRs' interests in options
---------------------------------------------------
            Executive   Executive     Sharesave
             Share       Share         Options
             Options -   Options -
             vested but  conditional
             not yet     upon
             exercised   performance
----------- ----------- ------------- -------------
Executive
 Directors
=========== ----------- ------------- -------------
Phil
 Bentley      2,075,980       371,799         3,244
----------- ----------- ------------- -------------
Sam Laidlaw           -             -         3,244
----------- ----------- ------------- -------------
Nick
Luff                  -             -         6,581
----------- ----------- ------------- -------------
Jake Ulrich   1,831,951       371,799         3,244
----------- ----------- ------------- -------------

----------- ----------- ------------- -------------
Other PDMRs
=========== ----------- ------------- -------------
Grant                                 21,917**
 Dawson       1,393,433       245,527
----------- ----------- ------------- -------------
Deryk King      974,019       287,618             -
----------- ----------- ------------- -------------
Catherine
 May                  -             -             -
----------- ----------- ------------- -------------
Anne Minto    1,152,791       232,199         3,928
----------- ----------- ------------- -------------
Chris
 Weston         323,063       238,512         3,928
----------- ----------- ------------- -------------
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** includes 15,336 options exercisable between 1 June 2008 and 30 November 2008.

The total number of Centrica shares in issue as at the end of 3 April 2008 is

3,684,573,519.

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Centrica Media Relations: 0845 072 8001
Centrica Investor Relations: 01753 494900
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