A member of a committee ceases to hold office if the member—
(a) dies or, if the member is an entity or local authority, ceases to exist or operate; or
(b) resigns office by written notice to the chairperson of the committee; or
(c) is adjudged bankrupt or, if the member is an entity, is put into liquidation; or
(d) is, for 3 consecutive meetings of the committee,—
(i) absent without leave; and
(ii) unrepresented; or
(e) breaches regulation 20(1).