Holding(s) in Company

Cookson Group PLC
12 October 2005

12 October 2005

Cookson Group plc  - Holding(s) in Company

Cookson Group plc was informed on 12 October 2005 that, on 11 October  2005,
Standard Life Investments acquired 230,610 shares on behalf of Standard Life
Group.  This increased the total held as a notifiable interest (including
material and non-material interests) to 22,935,304 shares being 12.09% of the
issued stock of that class.


No. of shares held                             Registered Name

22,935,304                                     Vidacos Nominees


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


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