Director Shareholding

Cookson Group PLC 24 June 2004 24 June 2004 Directors' Shareholdings Cookson Group plc In accordance with the rules of the Cookson Group Long-Term Incentive Plan 2004 (the 'Plan') the following Executive Directors of Cookson Group plc have received an allocation of Performance Shares under the Plan. The Plan was approved at the Company's AGM held on 14 May 2004. The following Performance Shares were allocated to Executive Directors on 24 June 2004, based upon the mid-market closing price for shares in Cookson Group plc on 23 June 2004, of 42.25 pence. Director Performance Shares G C Cozzani 559,147 S L Howard 1,104,900 D H Millard 579,882 Awards under the Plan will normally vest on or shortly after the third anniversary of the award date. The proportion of an award that vests will be subject to the attainment of certain performance conditions relating to the performance of the Company over the three financial years to which the award relates. Furthermore, the award to Mr Howard will vest on a pro-rata basis based upon the proportion of time he has participated in the Plan. A summary of the Plan is included in the 2003 Annual Report and the Notice of Meeting for the 2004 AGM. Both of these documents can be accessed via the website of Cookson Group plc at : www.cooksongroup.co.uk As a result of these allocations of Performance Shares, the revised share and option interests of the respective Directors in the shares of Cookson Group plc are as follows:- Director Performance Shares Existing Shareholdings Existing Share Options Deferred Shares allocated under the allocated under the 2004 Long-Term 2001-2003 Mid-Term Incentive Plan Incentive Plan G C Cozzani 559,147 158,028 3,338,758 151,338 S L Howard 1,104,900 713,976 7,814,881 304,422 D H Millard 579,882 399,999 3,621,598 149,322 Cookson Group plc 265 Strand London WC2R 1DB Tel: +44 (0) 20 7061 6500 Fax: +44 (0) 20 7061 6600 Web: www.cooksongroup.co.uk This information is provided by RNS The company news service from the London Stock Exchange

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