9SSubject to the provisions of this paragraph and of paragraphs 10 and 11 below, each member of either body other than its chief executive—
(a)shall hold and vacate office in accordance with the terms of the instrument under which he is appointed a member;
(b)may, by written notice to the Secretary of State, resign membership; and
(c)after ceasing to hold office shall be eligible for reappointment to the body.