Holding(s) in Company

Centrica PLC -0- *T TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES -------------------------------------------------------------------------------------------------------- 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are Centrica plc attached: -------------------------------------------------------------------------------------------------------- 2 Reason for the notification (please tick the appropriate box or boxes): -------------------------------------------------------------------------------------------------------- An acquisition or disposal of voting rights X -------------------------------------------------------------------------------------------------------- An acquisition or disposal of financial instruments which may result in the acquisition of shares already issues to which voting rights are attached -------------------------------------------------------------------------------------------------------- An event changing the breakdown of voting rights -------------------------------------------------------------------------------------------------------- Other (please specify): -------------------------------------------------------------------------------------------------------- 3. Full name of person(s) subject to the AXA S.A., 25 Avenue Matignon, 75008 Paris and its group notification obligation: of companies -------------------------------------------------------------------------------------------------------- 4. Full name of shareholder(s) (if different from 3.): -------------------------------------------------------------------------------------------------------- 5. Date of the transaction and date on which the threshold is crossed or reached: 30/07/2007 -------------------------------------------------------------------------------------------------------- 6. Date on which issuer notified: 31/07/2007 -------------------------------------------------------------------------------------------------------- 7. Threshold(s) that is/are crossed or reached: 5% -------------------------------------------------------------------------------------------------------- 8. Notified details: -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- A: Voting rights attached to shares -------------------------------------------------------------------------------------------------------- Class/type of Situation previous Resulting situation after the triggering transaction shares to the Triggering transaction if possible using ------------------------------------------------------------------------------------- the ISIN CODE Number Number Number Number of voting % of voting rights of of of shares rights Shares Voting ------------------------------------------------------------- Rights Direct Direct Indirect Direct Indirect -------------------------------------------------------------------------------------------------------- Ordinary 6 14/81p GB00B033F229 185,531,520 185,531,520 78,851,819 78,851,819 100,555,890 2.14 2.73 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- B: Financial Instruments -------------------------------------------------------------------------------------------------------- Resulting situation after the triggering transaction -------------------------------------------------------------------------------------------------------- Type of financial Expiration Exercise/ Conversion Number of voting % of voting instrument date Period/ Date rights that may be rights acquired if the instrument is exercised/ converted. -------------------------------------------------------------------------------------------------------- N/A N/A N/A N/A N/A -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- Total (A+B) -------------------------------------------------------------------------------------------------------- Number of voting rights % of voting rights -------------------------------------------------------------------------------------------------------- 179,407,709 4.88 -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: -------------------------------------------------------------------------------------------------------- AXA Ireland Pension Fund - Indirect 38,000 AXA Sun Life plc - Direct 1,845,873 AXA Rosenberg - Direct 2,545,299 AXA General Insurance Ltd - Direct 30,800 Sun Life Unit Assurance Ltd A/c X - Direct 11,502,000 Sun Life Unit Assurance Ltd A/c X - Direct 22,842,486 AXA UK Investment Co ICVC Global Distribution Fund - Indirect 124,000 AXA UK Investment Co ICVC Global Growth Fund - Indirect 394,000 AXA UK Investment Co ICVC Distribution Fund - Indirect 750,000 AXA UK Investment Co ICVC UK Equity Income Fund - Indirect 6,500,000 AXA UK Investment Co ICVC UK Growth Fund - Indirect 405,000 PPP Healthcare Group plc - Indirect 213,500 Sun Life Pensions Management Ltd - Direct 250,000 Sun Life Pensions Management Ltd - Direct 500,000 Sun Life Pensions Management Ltd A/c - Direct 1,800,000 Sun Life Assurance Society Plc - Direct 975,000 AXA Rosenburg - Direct 2,056,701 AXA Insurance UK - Direct 992,000 AXA UK Group Pension Scheme - Indirect 1,200,000 AXA General Unit Trust - Indirect 1,295,000 AXA Financial, Inc - Indirect 46,076,955 AXA Colonia Konzern - Direct 152,000 AXA Colonia Konzern - Indirect 17,298 Sun Life International (IOM) Ltd - Direct 2,000,000 AXA France - Indirect 1,087,983 AXA Australia - Indirect 174,439 AXA Rosenburg - Indirect 40,751,190 AXA Financial, Inc* - Indirect 457,580 Sun Life Pensions Management Ltd - Direct 404,461 Sun Life Pensions Management Ltd - Direct 64,450 Sun Life Unit Assurance Ltd LTAV UK Equity - Direct 921,016 Sun Life Unit Assurance Ltd FTSE All Share Tracker - Direct 643,903 Sun Life Pensions Management LTAV UK Equity - Direct 4,175,322 Sun Life Pensions Management FTSE All Share Tracker - Direct 3,307,809 AXA Framlington St James Place Exempt (Pens) Fund - Indirect 536,000 AXA St James Place Net (Life) Fund - Indirect 599,000 AXA Framlington St James Place Offshore Fund - Indirect 140,000 Framlington onshore private clients - Indirect 9,445 AXA Winterthur - Direct 12,512,359 ASL With Profit Tranition Fund 4,692,593 SLAS With Profit Transition 4,424,247 ------------------------------ -------------------------------------------------------------------------------------------------------- Proxy Voting: -------------------------------------------------------------------------------------------------------- 10. Name of the proxy holder: N/A -------------------------------------------------------------------------------------------------------- 11. Number of voting rights proxy holder will cease to hold: N/A -------------------------------------------------------------------------------------------------------- 12. Date on which proxy holder will cease to hold voting rights: N/A -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- 13. Additional information: N/A -------------------------------------------------------------------------------------------------------- 14. Contact name: Robin Healy -------------------------------------------------------------------------------------------------------- 15. Contact telephone number: 01753 494 017 -------------------------------------------------------------------------------------------------------- *T

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Centrica (CNA)
UK 100

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