REVOCATION OF TRADE MARK REGISTRATIONS
The registration of a trade mark may be revoked on any of the following grounds:-
(a) that within the period of five years following the date of completion of the registration procedure it has not been put to genuine use in the United Kingdom, by the proprietor or with his consent, in relation to the goods or services for which it is registered, and there are no proper reasons for non-use;
(b) that such use has been suspended for an uninterrupted period of five years, and there are no proper reasons for non-use;
(c) that, in consequence of acts or inactivity of the proprietor, it has become the common name in the trade for a product or service for which it is registered;
(d) that in consequence of the use made of it by the proprietor or with his consent in relation to the goods or services for which it is registered, it is liable to mislead the public, particularly as to the nature, quality or geographical origin of those goods or services.
Section 46 (1) UK Trade Marks Act 1994