3(1)Subject to the following provisions of this Schedule, a person shall hold an office to which he is appointed under paragraph 1(2), (3) or (6) in accordance with the terms of his appointment.
(2)A person shall not be appointed to such an office for more than three years at a time.
(3)A person may at any time resign such an office.
(4)The Secretary of State may at any time remove a person from such an office if satisfied that—
(a)he has without reasonable excuse failed to carry out his duties for a continuous period of three months beginning not earlier than six months before that time;
(b)he has been convicted of a criminal offence;
(c)he has become bankrupt or made an arrangement with his creditors;
(d)he is incapacitated by physical or mental illness;
(e)he has acted improperly in relation to his duties; or
(f)he is otherwise unable or unfit to perform his duties.