4(1)The Agency may from time to time, and if required to do so by the Secretary of State shall,—E+W+S
(a)prepare in accordance with paragraph 2 above a fresh scheme with respect to the appointment of persons as members of the advisory committee for any particular region; and
(b)submit that scheme to the Secretary of State for his approval;
and paragraph 3 above shall have effect accordingly in relation to any such scheme.
(2)An approved membership scheme may from time to time be varied by the Agency with the approval of the Secretary of State.
(3)The provisions of paragraph 3 above shall have effect in relation to any variation of an approved membership scheme as they have effect in relation to a scheme.