Director/PDMR Shareholding

Cookson Group PLC 17 October 2006 THE FOLLOWING ANNOUNCEMENT REPLACES THE ANNOUNCEMENT RELEASED AT 15.15 ON 17 OCTOBER 2006 IN WHICH THE SHAREHOLDING OF MICHAEL GUY BUTTERWORTH, DIRECTOR, WAS UNDERSTATED BY 1,964 SHARES. HIS CURRENT HOLDING IS 20,447 SHARES. SCHEDULE 11 NOTIFICATION OF INTERESTS OF DIRECTORS/PERSONS DISCHARGING MANAGERIAL RESPONSIBILITY AND/OR CONNECTED PERSONS 1) Name of the issuer COOKSON GROUP PLC 2) State whether the notification related to: i. a transaction notified in accordance with DR 3.1.4R(1)(a); or with ii. DR 3.1.4 (R)(1)(b) a disclosure made in accordance with section 324 (as extended by section 328) of the Companies Act 1985; or iii. Both (i) and (ii) III 3) Name of person discharging managerial responsibilities/director MICHAEL GUY BUTTERWORTH 4) State whether notification relates to a person connected with a person discharging managerial responsibilities/director named in 3 and identify the connected person IN RESPECT OF DIRECTOR NAMED IN (3) ABOVE, MICHAEL GUY BUTTERWORTH 5) Indicate whether the notification is in respect of a holding of the person referred to in 3 or 4 above or in respect of a non-beneficial interest IN RESPECT OF DIRECTOR NAMED IN (3) ABOVE, MICHAEL GUY BUTTERWORTH 6) Description of shares (including class), debentures or derivatives or financial instrument relating to shares ORDINARY 10p SHARES 7) Name of registered shareholder(s) and, if more than one, the number of shares held by each of them MICHAEL GUY BUTTERWORTH 8) State the nature of the transaction RE-INVESTMENT OF DIVIDEND (PARTICIPATION IN DRIP) 9) Number of shares, debentures or financial instruments relating to shares acquired 92 SHARES 10)Percentage of issued class acquired 0.0000476% 11)Number of shares, debentures or financial instruments relating to shares disposed N/A 12)Percentage of issued class disposed N/A 13)Price per share or value of transaction 600p PER SHARE 14)Date and place of transaction 16 OCTOBER 2006, LONDON 15)Total holding following notification and total percentage holding following notification 20,447 SHARES, 0.0106% 16)Date issuer informed of transaction 17 OCTOBER 2006 If a person discharging managerial responsibilities has been granted options by the issuer complete the following boxes 17) Date of grant 18) Period during which or date on which it can be exercised 19) Total amount paid (if any) for grant of the option 20) Description of shares or debentures involved (class and number) 21) Exercise price (if fixed at time of grant) or indication that price is to be fixed at the time of exercise 22) Total number of shares or debentures over which options held following notification 23) Any additional information 24) Name of contact and telephone number for queries Silvana Glibota-Vigo, Company Secretarial Assistant, 020 7822 0065 Name of duly authorised officer/official of issuer responsible for making notification Silvana Glibota-Vigo, Company Secretarial Assistant Date of notification 17 OCTOBER 2006 END This information is provided by RNS The company news service from the London Stock Exchange S

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