Director/PDMR Shareholding

Cookson Group PLC
02 August 2005


2 August 2005
Director's Shareholding
Cookson Group plc


Following Mr M G Butterworth's appointment as a Director on 15 June 2005 and in
accordance with the rules of the Cookson Group Long-Term Incentive Plan 2004
(the 'Plan'), Mr Butterworth has today been awarded an allocation of 40,636
Performance Shares.  This allocation is based upon the mid-market closing price
for shares in Cookson Group plc on 1 August 2005, of 336 pence.  Awards to the
Company's other Executive Directors were made earlier in the year.

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.

As a result of this allocation of Performance Shares, Mr Butterworth's interests
in the shares of Cookson Group plc totals 40,636 Performance Shares.


Cookson Group plc
265 Strand
London WC2R 1DB
Tel: [phone]
Fax: [phone]
Web: www.cooksongroup.co.uk



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