Holding(s) in Company

Cookson Group PLC
04 September 2002

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

FIDELITY INTERNATIONAL 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

NON-BENEFICIAL INTEREST

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them
REGISTERED NAME                        MANAGEMENT COMPANY                                 NUMBER OF SHARES
STATE STREET NOMINEES LTD.             FIDELITY MANAGEMENT TRUST COMPANY                                     150,000
BROWN BROTHERS HARRIMAN                FIDELITY MANAGEMENT TRUST COMPANY                                      82,200
CHASE NOMINEES LTD.                    FIDELITY INVESTMENT SERVICES LTD.                                  63,246,401
CHASE MANHATTAN BANK LONDON            FIDELITY INVESTMENT SERVICES LTD.                                  19,547,502
RBS TRUST BANK                         FIDELITY PENSION MANAGEMENT                                         3,268,795
NORTRUST NOMINEES LTD.                 FIDELITY PENSION MANAGEMENT                                           788,060
BT GLOBENET NOMINEES LTD.              FIDELITY PENSION MANAGEMENT                                           269,880
CITIBANK                               FIDELITY PENSION MANAGEMENT                                           476,580
CHASE NOMINEES LTD.                    FIDELITY PENSION MANAGEMENT                                         8,765,600
BANK OF NEW YORK LONDON                FIDELITY PENSION MANAGEMENT                                         2,045,940
NORTHERN TRUST                         FIDELITY PENSION MANAGEMENT                                         2,783,240
HSBC                                   FIDELITY PENSION MANAGEMENT                                           847,780
BANKERS TRUST                          FIDELITY INTERNATIONAL LIMITED                                        511,420
RBS TRUST BANK                         FIDELITY INTERNATIONAL LIMITED                                      7,820,740
CITIBANK                               FIDELITY INTERNATIONAL LIMITED                                        367,120
CHASE NOMINEES LTD                     FIDELITY INTERNATIONAL LIMITED                                     14,102,450
HSBC CLIENT HOLDINGS NOMINEE (UK)      FIDELITY INTERNATIONAL LIMITED                                     92,647,427
LIMITED
CHASE MANHATTAN BANK LONDON            FIDELITY INTERNATIONAL LIMITED                                        289,540
DEUTSCHE BANK                          FIDELITY INTERNATIONAL LIMITED                                      2,617,780
BANK OF NEW YORK LONDON                FIDELITY INTERNATIONAL LIMITED                                     21,733,318
NORTHERN TRUST                         FIDELITY INTERNATIONAL LIMITED                                      6,102,140
MELLON TRUST                           FIDELITY INTERNATIONAL LIMITED                                        620,360
BANK OF NEW YORK BRUSSELS              FIDELITY INTERNATIONAL LIMITED                                      1,215,689



5) Number of shares/amount of stock acquired

139,818,446


6) Percentage of issued class

N/A (SEE PARA 14 BELOW)

7) Number of shares/amount of stock disposed

N/A


8) Percentage of issued class

N/A


9) Class of security

ORDINARY SHARES OF 1 PENCE EACH

10) Date of transaction

30 AUGUST 2002

11) Date company informed

3 SEPTEMBER 2002

12) Total holding following this notification

250,299,962 SHARES

13) Total percentage holding of issued class following this notification

13.23%

14) Any additional information

CHANGE IN HOLDINGS PRIMARILY DUE TO TAKE UP OF RIGHTS AND INCREASE IN SHARE
CAPITAL FIGURE


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: 4 SEPTEMBER 2002


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