6U.K.The following persons are disqualified persons in relation to a licence granted by the Commission or the Authority—
(a)an advertising agency;
(b)an associate of an advertising agency;
(c)any body which is controlled by a person falling within sub-paragraph (a) or (b) or by two or more such persons taken together;
(d)any body corporate in which a person falling within any of sub-paragraphs (a) to (c) is a participant with more than a 5 per cent. interest.