A member of the Authority may resign his office at any time by notice in writing under his hand given to the Secretary of the Authority, and his resignation shall take effect upon receipt of such notice by the said Secretary.

A member of the Authority who becomes disqualified for being such a member shall vacate his office immediately upon becoming so disqualified.

A member of the Authority shall also vacate his office if he has throughout a period of six consecutive months failed to attend any meeting of the Authority, unless the failure was due to illness or some other reason approved before or during that period by the Authority, but for the purposes of this paragraph attendance as a member at a meeting of any committee or sub-committee of the Authority shall be regarded as attendance at a meeting of the Authority.

Whenever a casual vacancy arises in the office of a member of the Authority (whether by reason of any of the foregoing provisions of this Article or by reason of paragraph 3 or 4 of Part I of Schedule 5 to the Act of 1968 or otherwise howsoever), the Secretary of the Authority shall forthwith notify the vacancy so arising to the constituent council or group of constituent councils responsible for appointing a member to fill that vacancy or, where the member was appointed by the Minister otherwise than under paragraph 5 of Part I of Schedule 5 to the Act of 1968, to the Minister.