Form 20-F Lodged with SEC in USA

Cookson Group PLC 21 June 2000 COOKSON GROUP plc Cookson Group plc ('Cookson') announces that on 20 June 2000 it lodged with the Securities and Exchange Commission in Washington DC, USA, its annual filing (Form 20-F), which contains inter alia, Cooksons's consolidated financial statements for 1997-99 presented using the format and style required under the US Generally Accepted Accounting Principles. Copies of the Form 20-F can be obtained from Cookson's registered office at The Adelphi, 1-11 John Adam Street, London WC2N 6HJ during normal business hours. For further information, please contact Dennis Millard, Group Finance Director Cookson Group plc London WC2N 6HJ 020 7766 4500 dennis_millard@cookson.co.uk Richard Malthouse Group Secretary Cookson Group plc London WC2N 6HJ 020 7766 4500 richard_malthouse@cookson.co.uk

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