18(1)A member of a relevant council appointed to be a member of a police authority under paragraph 2 shall cease to be a member of the authority if he ceases to be a member of the council (and does not on the same day again become a member of the council).
(2)A magistrate appointed to be a member of a police authority under paragraph 8 shall cease to be a member of the authority if he ceases to be a magistrate for an area all or part of which constitutes or forms part of the authority’s area.