Director Declaration

16 September 2010 COOKSON GROUP PLC NOTIFICATION OF NEW DIRECTORSHIP - FOREIGN & COLONIAL INVESTMENT TRUST PLC Cookson Group plc announces that Jeff Hewitt, Non-executive Director, has been appointed to the board of Foreign & Colonial Investment Trust PLC as a non-executive director with effect from 15 September 2010. This disclosure is made pursuant to paragraph 2 of Listing Rule 9.6.14R. - Ends - For further information please contact: Richard Malthouse, Group Secretary Cookson Group plc Tel: +44 (0)20 7822 0000

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