Director Declaration

23 April 2010 COOKSON GROUP PLC NOTIFICATION OF NEW DIRECTORSHIP - FOSECO INDIA LIMITED Cookson Group plc announces that François Wanecq, executive Director, has been appointed to the Board of Foseco India Limited, a company listed on the Pune Stock Exchange, Bombay Stock Exchange and National Stock Exchange of India, as a director with effect from 21 April 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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