Holding(s) in Company

Cookson Group PLC
06 July 2006


6 July 2006


Cookson Group plc - Holding(s) in Company


Cookson Group plc was informed today that Standard Life Investments had acquired
1,013,100 shares on behalf of Standard Life Group on 6 July 2006.  This
increased the total held as a material interest to 14,137,238 shares being
7.336% of the issued stock of that class.

Standard Life also continues to hold a non-material interest of c.6% in the
shares of Cookson Group plc.


Total no. of shares held                                Registered Name

25,653,785                                              Vidacos Nominees


Rachel Fell
Deputy Secretary
Cookson Group plc
165 Fleet Street
London  EC4A 2AE
Tel:      [phone]
Fax:     [phone]
Web:   www.cooksongroup.co.uk



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