Holding(s) in Company

Cookson Group PLC 13 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 MORLEY FUND MANAGEMENT LIMITED (A subsidiary of CGNU PLC) AND CGNU PLC 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 BNY NORWICH UNION NOMINEES LTD - 19,786,429 SHARES CHASE GA GROUP NOMINEES LTD - 26,502,884 SHARES CUIM NOMINEE LIMITED - 19,858,700 SHARES RBSTB NOMINEES LIMITED - 1,589,478 SHARES CHASE NOMINEES LIMITED - 1,216,650 SHARES CREDIT AGRICOLE INDOSUEZ - 225,000 SHARES CUIM NOMINEE LIMITED - 1,044,941 SHARES HSBC GLOBAL CUSTODY NOMINEE UK LIMITED - 24,000 SHARES NORTRUST NOMINEES LIMITED - 1,573,944 SHARES VIDACOS NOMINEES LIMITED - 1,432,745 SHARES 5) Number of shares/amount of stock acquired 509,000 SHARES 6) Percentage of issued class 0.07% 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 11 FEBRUARY 2002 11) Date company informed 13 FEBRUARY 2002 12) Total holding following this notification 73,254,771 SHARES 13) Total percentage holding of issued class following this notification 10.07% 14) Any additional information 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: 13 FEBRUARY 2002 This information is provided by RNS The company news service from the London Stock Exchange

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