Holding(s) in Company

Cookson Group PLC 25 February 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 CHASE NOMINEES LTD. FIDELITY INVESTMENT SERVICES LTD. 18,350,419 CHASE MANHATTAN BANK LONDON FIDELITY INVESTMENT SERVICES LTD. 6,224,770 RBS TRUST BANK FIDELITY PENSION MANAGEMENT 1,199,000 NORTRUST NOMINEES LTD. FIDELITY PENSION MANAGEMENT 200,000 BT GLOBENET NOMINEES LTD. FIDELITY PENSION MANAGEMENT 111,000 CITIBANK FIDELITY PENSION MANAGEMENT 196,000 CHASE NOMINEES LTD. FIDELITY PENSION MANAGEMENT 3,145,300 BANK OF NEW YORK LONDON FIDELITY PENSION MANAGEMENT 841,500 NORTHERN TRUST FIDELITY PENSION MANAGEMENT 887,700 HSBC FIDELITY PENSION MANAGEMENT 286,900 BANKERS TRUST FIDELITY INTERNATIONAL LIMITED 198,000 RBS TRUST BANK FIDELITY INTERNATIONAL LIMITED 1,928,800 CITIBANK FIDELITY INTERNATIONAL LIMITED 151,000 CHASE NOMINEES LTD FIDELITY INTERNATIONAL LIMITED 6,140,609 HSBC CLIENT HOLDINGS NOMINEE (UK) FIDELITY INTERNATIONAL LIMITED 21,640,526 LIMITED CHASE MANHATTAN BANK LONDON FIDELITY INTERNATIONAL LIMITED 30,600 DEUTSCHE BANK FIDELITY INTERNATIONAL LIMITED 816,600 BANK OF NEW YORK LONDON FIDELITY INTERNATIONAL LIMITED 2,176,700 NORTHERN TRUST FIDELITY INTERNATIONAL LIMITED 1,289,600 5) Number of shares/amount of stock acquired NOT DISCLOSED 6) Percentage of issued class NOT DISCLOSED 7) Number of shares/amount of stock disposed N/A 8) Percentage of issued class N/A 9) Class of security ORDINARY SHARES OF 50 PENCE EACH 10) Date of transaction 22 FEBRUARY 2002 11) Date company informed 25 FEBRUARY 2002 12) Total holding following this notification 65,815,024 SHARES 13) Total percentage holding of issued class following this notification 9.05% 14) Any additional information N/A 15) Name of contact and telephone number for queries ALAN WALLWORK, ASST COMPANY SECRETARY, COOKSON GROUP PLC - TEL: 020 7766 4537 16) Name and signature of authorised company official responsible for making this notification ALAN WALLWORK, ASST COMPANY SECRETARY, COOKSON GROUP PLC Date of notification 25 FEBRUARY 2002 This information is provided by RNS The company news service from the London Stock Exchange

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