Holding(s) in Company

Cookson Group PLC 05 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 FRANKLIN RESOURCES, INC. 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 BANKERS TRUST COMPANY (220,981 SHARES) BANK OF NEW YORK NOMINEES (41,390 SHARES) CHASE NOMINEES LIMITED (47,387,777 SHARES) CLYDESDALE BANK (4,746,130 SHARES) DEUTSCHE BANK AG (150,372 SHARES) MERRILL LYNCH (2,296,001 SHARES) ROYAL TRUST CORP OF CANADA (12,059,464 SHARES) STATE STREET (2,200,082 SHARES) 5) Number of shares/amount of stock acquired NOT DISCLOSED (SEE PARA 14 BELOW) 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 1 PENCE EACH 10) Date of transaction 4 SEPTEMBER 2002 11) Date company informed 5 SEPTEMBER 2002 12) Total holding following this notification 69,102,197 SHARES 13) Total percentage holding of issued class following this notification 3.65% 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: 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 5 SEPTEMBER 2002 This information is provided by RNS The company news service from the London Stock Exchange

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