Holding in Company

Cookson Group PLC 6 December 2001 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 (79,132,156 SHARES) CITIBANK (70,000 SHARES) CLYDESDALE BANK (2,666,800 SHARES) DEUTSCHE BANK AG (55,170 SHARES) MERRILL LYNCH (2,296,001 SHARES) ROYAL TRUST CORP OF CANADA (9,241,314 SHARES) STATE STREET (1,079,201 SHARES) 5) Number of shares/amount of stock acquired 307,882 SHARES 6) Percentage of issued class 0.04% 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 6 DECEMBER 2001 11) Date company informed 6 DECEMBER 2001 12) Total holding following this notification 94,803,013 SHARES 13) Total percentage holding of issued class following this notification 13.03% 14) Any additional information N/A 15) Name of contact and telephone number for queries BEN MATHEWS, DEPUTY SECRETARY, COOKSON GROUP PLC - TEL: 020 7766 4537 16) Name and signature of authorised company official responsible for making this notification BEN MATHEWS, DEPUTY SECRETARY, COOKSON GROUP PLC Date of notification 6 DECEMBER 2001

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