Holding(s) in Company

Cookson Group PLC
01 October 2003

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

BRITEL FUND TRUSTEES LIMITED

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 the registered holder(s) and, if more than one holder, the
number of shares held by each of them

BRITEL FUND NOMINEES LIMITED (4,980,091 SHARES)

CHASE NOMINEES LIMITED (129,508,669 SHARES)

5) Number of shares/amount of stock acquired

N/A

6) Percentage of issued class

N/A

7) Number of shares/amount of stock disposed

NOT DISCLOSED


8) Percentage of issued class

NOT DISCLOSED


9) Class of security

ORDINARY SHARES OF 1 PENCE EACH

10) Date of transaction

30 SEPTEMBER 2003

11) Date company informed

1 OCTOBER 2003

12) Total holding following this notification

132,048,760 SHARES

13) Total percentage holding of issued class following this notification

6.98%

14) Any additional information

N/A


15) Name of contact and telephone number for queries

RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC-020 7061 6565

16) Name and signature of authorised company official responsible for
making this notification


RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC



Date of notification: 1 OCTOBER 2003


                      This information is provided by RNS
            The company news service from the London Stock Exchange