Holding(s) in Company

Centrica PLC
                  

TR-11: NOTIFICATION OF MAJOR INTERESTS IN SHARES

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1. Identity of the issuer or the underlying issuer of                Centrica plc
 existing shares to which voting rights are attached2:
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2. Reason for the notification (please tick the appropriate box or boxes)
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An acquisition or disposal of voting rights                                            Yes
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An acquisition or disposal of financial instruments which may result in the
 acquisition of shares already issued to which voting rights are attached
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An event changing the breakdown of voting rights
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Other (please specify):___________________________________________
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3. Full name of person(s) subject to the notification         Barclays Global Investors
 obligation3:
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4. Full name of shareholder(s) (if different from 3.)4:
Barclays Global Fund Advisors
Barclays Global Investors Ltd
Barclays Global Investors, N.A.
Indexchange Investments AG
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5. Date of the transaction (and date on which the                    28 - Nov-07
 threshold is crossed or reached if different)5:
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6. Date on which issuer notified:                                     29-Nov-07
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7. Threshold(s) that is/are crossed or reached:                          4% to 3%
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8. Notified details:
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A: Voting rights attached to shares
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Class/type of   Situation previous to   Resulting situation after the triggering transaction7
 shares          the Triggering
if possible      transaction 6
 using the ISIN ----------------------- --------------------------------------------------------------
 CODE           Number of   Number of   Number of   Number of voting rights  % of voting rights
                 Shares      Voting      shares      ix
                             Rights     ----------- ------------------------ -------------------------
             1.          1.  viii                   Direct x    Indirect xi  Direct      Indirect
--------------- ----------- ----------- ----------- ----------- ------------ ----------- -------------
   GB00B033F229 110,138,653 110,138,653 110,184,220           0  110,184,220        0.00          3.00
--------------- ----------- ----------- ----------- ----------- ------------ ----------- -------------
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B: Financial Instruments
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Resulting situation after the triggering transaction xii
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Type of financial  Expiration    Exercise/ Conversion   Number of voting rights % of voting
 instrument         date xiii     Period/ Date xiv       that may be acquired    rights
                                                         if the instrument is
                                                         exercised/ converted.
------------------ ------------- ---------------------- ----------------------- ---------------
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Total (A+B)
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Number of voting rights                      % of voting rights
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110,184,220                                  3.00
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9. Chain of controlled undertakings through which the voting rights and/or the financial
 instruments are effectively held, if applicable xv:
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Barclays Global Fund Advisors
Barclays Global Fund Investors Ltd
Barclays Global Fund Investors, N.A.
Indexchange Investment AG
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Proxy Voting:
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10. Name of the proxy holder:
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11. Number of voting rights proxy holder will cease to
 hold:
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12. Date on which proxy holder will cease to hold voting
 rights:
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13. Additional information:
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14. Contact name:                      Helen Barker
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15. Contact telephone number:          01753 494 009
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