18E+W+SOn any such application the licensing authority may cancel the registration of the club or institute under Part III of this Act if they are satisfied—
(a)that the relevant premises are frequented wholly or mainly by persons under eighteen, or
(b)that, in the case of a club, the club is not a bona fide members’ club, or has less than twenty-five members, or is of a merely temporary character, or
(c)that a person has been convicted as mentioned in paragraph 9 of this Schedule,
and (in any such case) that in the circumstances the registration ought to be cancelled.