Holding in Company

Cookson Group PLC
22 December 2000




Schedule 10 - Notification of Major Interests in Shares

1   Name of company:
Cookson Group plc

2   Name of shareholder having a major interest:
CGNU plc

3   Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a non-beneficial
interest or in the case of an individual holder if it is a holding of that
person's spouse or children under the age of 18:
AS ABOVE


4   Name of registered holder(s) and, if more than one holder, the number of
shares held by each of them:
BNY Nominees Limited 23,500 shares
BNY Norwich Union Nominees Limited 19,229,137 shares
Chase GA Group Nominees Limited 2,514,440 shares
Chase GA Pension Nominees Limited 900,000 shares
Chase Nominees Limited 8,000 shares
CUIM Nominee Limited 1,420,000 shares
State Street Bank Nominees Limited 10,000 shares

5   Number of shares/amount of stock acquired:
2,725,346 ORDINARY SHARES OF 50P EACH

6   Percentage of issued class:
0.375%

7   Number of shares/amount of stock disposed:
N/A

8   Percentage of issued class:
N/A

9   Class of security:
ORDINARY SHARES OF 50P EACH

10  Date of transaction:
21 DECEMBER 2000

11  Date company informed:
22 DECEMBER 2000

12  Total holding following this notification:
24,105,077 ORDINARY SHARES OF 50P EACH

13  Total percentage holding of issued class following this notification:
3.32%

14  Contact name for queries:
JULIA BAGGULEY

15 Contact telephone number:
020 7766 4537

16  Name of company official responsible for making notification:
AS ABOVE

17  Date of notification:
22 DECEMBER 2000

Additional Information: