Disclosure of Short Position

TR-3:

Disclosure of Disclosable Short Position relating to Securities which are the subject of a rights issue

1. Full name of person(s) holding the disclosable short position:

UBS AG

2: Name of the issuer of the relevant securities

Cookson Group

3: Disclosable short position

-0.31%

4. Date that disclosable short position was reached or exceeded

18 February 2009