Date of 2010 Half-yearly Financial Report

22 June 2010 Cookson Group plc ("Cookson") - Half-yearly Financial Report Cookson will announce its half-yearly financial report for the six months to 30 June 2010 on Wednesday 4 August 2010. A presentation for investors and analysts will be held at 9.00am at King Edward Hall, Bank of America Merrill Lynch, 2 King Edward Street EC1A 1HQ. Cookson Group plc 165 Fleet Street London EC4A 2AE Tel: +44 (0) 20 7822 0000 Fax: +44 (0) 20 7822 0100 Web: www.cooksongroup.co.uk

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