Paragraph 12

Every member of a joint committee appointed under this Schedule who at the time of his appointment was a member of one of the appointing authorities shall, upon ceasing to be a member of that authority, also cease to be a member of the joint committee and of any sub-committee thereof; but for the purpose of this paragraph a member of an authority shall not be deemed to have ceased to be a member thereof by reason of retirement if he has been re-elected a member thereof not later than the day of his retirement.