Blocklisting Interim Review

Name of applicant:

Vesuvius plc

Name of scheme:

These shares are used to acquire any ordinary shares in Cookson Group plc issued to existing optionholders on exercise of their options under the Cookson Executive Share Option Scheme, in accordance with Cookson's Articles.

Period of return:

From:

1 January 2013

To:

30 June 2013

Balance of unallotted securities under scheme(s) from previous return:

100,000 ordinary shares of 10p each

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

NIL

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

36,319,ordinary 10p shares

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

63,681,ordinary 10p shares

Name of contact:

Richard Malthouse

Telephone number of contact:

020 7822 0000