1(1)Subject as follows, a Commissioner holds office for the period specified in his appointment (or re-appointment).
(2)A person may not be appointed as a Commissioner for more than five years at a time.
(3)A Commissioner may resign by notice in writing to the Secretary of State.
(4)The Secretary of State may dismiss a Commissioner if satisfied that—
(a)he has without reasonable excuse failed to exercise his functions for a continuous period of three months beginning not earlier than six months before the day of dismissal,
(b)he has been convicted of a criminal offence,
(c)a bankruptcy order has been made against him, or his estate has been sequestrated, or he has made a composition or arrangement with, or granted a trust deed for, his creditors, or
(d)he is otherwise unable or unfit to exercise his functions.