Holding(s) in Company

Cookson Group PLC
22 May 2002


                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

CLERICAL MEDICAL INVESTMENT MANAGEMENT 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

CHASE NOMINEES LIMITED A/C CMIG2304 - 5,085,732 SHARES

CHASE NOMINEES LIMITED A/C CMIG2314 - 7,687,049 SHARES

CHASE NOMINEES LIMITED A/C CMIG2343 - 365,000 SHARES

MORGAN NOMINEES - 1,855,439 SHARES

MORGAN NOMINEES - 1,735,526 SHARES

MORGAN NOMINEES - 78,237 SHARES

MORGAN NOMINEES - 61,873 SHARES

MORGAN NOMINEES - 2,048,714 SHARES

MORGAN NOMINEES - 77,221 SHARES

HSBC GLOBAL NOMINEES (UK) LTD A/C 823733 - 82,104 SHARES

HSBC GLOBAL NOMINEES (UK) LTD A/C - 883,060 SHARES

HSBC GLOBAL NOMINEES (UK) LTD A/C - 1,602,785 SHARES

HSBC GLOBAL NOMINEES (UK) LTD A/C - 104,814 SHARES

HSBC GLOBAL NOMINEES (UK) LTD A/C 744285 - 4,000 SHARES

CMI UK TRACKER FUND - 26,990 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 50 PENCE EACH

10) Date of transaction

20 MAY 2002

11) Date company informed

21 MAY 2002

12) Total holding following this notification

21,698,544 SHARES

13) Total percentage holding of issued class following this notification

2.98%

14) Any additional information

N/A

15) Name of contact and telephone number for queries

ALAN WALLWORK, ASST COMPANY SECRETARY, COOKSON GROUP PLC - TEL: [phone]

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

ALAN WALLWORK, ASST COMPANY SECRETARY, COOKSON GROUP PLC


Date of notification: 22 MAY 2002



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