Holding(s) in Company

Cookson Group PLC
08 November 2005


8 November 2005


Cookson Group plc  - Holding(s) in Company


Cookson Group plc was informed on 8 November 2005 that, on 7 November 2005,
Standard Life Investments acquired 159,296 shares on behalf of Standard Life
Group.  This increased the total held as a notifiable interest (including
material interests only) to 15,293,478 shares being 8.06% of the issued stock of
that class.



No. of shares held                             Registered Name

15,293,478                                     Vidacos Nominees


Standard Life also continues to hold a non-material interest of c.5% in the
shares of Cookson Group plc.



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






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