BLOCK LISTING SIX MONTHLY RETURN
Date: 1 July 2011
Name of applicant: Cookson Group plc
Name of scheme: Cookson Group Executive Share Option
Schemes (CGESOS)
Cookson Group Employee Share Savings
Scheme (CGESSS)
Period of return: From: 1 January 2011 To: 30 June 2011
Balance of unallotted securities under CGESOS - 117,664 ordinary £1 shares
scheme(s) from previous return:
CGESSS - 30,918 ordinary £1 shares
Plus: The amount by which the block Nil
scheme(s) has been increased since the
date of the last return (if any
increase has been applied for):
Less: Number of securities issued/ CGESOS - 6,727 ordinary £1 shares
allotted under scheme(s) during period
(see LR3.5.7G): CGESSS - Nil
Equals: Balance under scheme(s) not CGESOS - 110,397 ordinary £1 shares
yet issued/allotted at end of period:
CGESSS - 30,918 ordinary £1 shares
Following the cessation of the Cookson Group Employee Share Savings Scheme, no
further returns will be made in respect of this scheme.
Name of contact: Silvana Glibota-Vigo
Telephone number of contact: 020 7822 0000
Name of person making return: Silvana Glibota-Vigo, Company Secretarial
Assistant, Cookson Group plc