Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: COOKSON GROUP PLC 2. Reason for the notification (please state Yes/No): An acquisition or disposal of voting rights: ( ) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: ( ) An event changing the breakdown of voting rights: ( ) Other (please specify): ( Yes, increase following Rights Issue) 3. Full name of person(s) subject to the notification obligation: Lloyds Banking Group plc 4. Full name of shareholder(s) (if different from 3.): See Section 9 5. Date of the transaction (and date on which the threshold is crossed or reached if different): 10 MARCH 2009 6. Date on which issuer notified: 11 MARCH 2009 7. Threshold(s) that is/are crossed or reached: Increase to above 9% 8. Notified details: …………….. A: Voting rights attached to shares Class/type of shares if possible Situation previous to the using the ISIN CODE Triggering transaction Number of shares Number of voting Rights Ord 10p 17,423,264 17,423,264 GB00B07V4P80 Resulting situation after the triggering transaction Class/type of shares if possible Number of Number of voting % of voting using the ISIN CODE shares rights rights Direct Direct Indirect Direct Indirect Ord 10p 46,494,232 46,494,232 213,503,795 1.68 7.72 GB00B07V4P80 B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting rights that may be % of financial Date Conversion acquired if the instrument is voting instrument Period/ Date exercised/ converted. rights N/A Total (A+B) Number of voting % of voting rights rights 259,998,027 9.40 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: 167,768,901 shares (6.07%) are held by State Street Nominees Ltd. Shares are under the control of Scottish Widows Investment Partnership Ltd, a wholly owned subsidiary of Scottish Widows Group Ltd, a wholly owned subsidiary of Lloyds TSB Bank plc, a wholly owned subsidiary of Lloyds Banking Group plc (Indirect Interests). 90,981,000 shares (3.29%) are under the control of Insight Investment Management (Global) Limited, a wholly owned subsidiary of Insight Investment Management Limited, a wholly owned subsidiary of HBOS Insurance & Investment Group Limited, a wholly owned subsidiary of HBOS plc, a wholly owned subsidiary of Lloyds Banking Group plc (Indirect Interests). 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: RACHEL FELL, DEPUTY SECRETARY, COOKSON GROUP PLC 15. Contact telephone number: + 44 (0) 20 7822 0000

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