Holding(s) in Company

Cookson Group PLC
26 September 2005

26 September 2005


Cookson Group plc  - Holding(s) in Company

Cookson Group plc was informed on 23 September 2005 that, on 22 September 2005,
Standard Life Investments acquired 500,000 shares on behalf of Standard Life
Group.  This increased the total held as a material interest to 13,477,588
shares being 7.105% of the issued stock of that class.


No. of shares held                         Registered Name

13,477,588                                 Vidacos Nominees


Cookson Group plc

265 Strand

London WC2R 1DB

Tel:      [phone]

Fax:      [phone]

Web:      www.cooksongroup.co.uk


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