reg 3 Terms of Appointment
(1) The chairman shall be appointed for a period not exceeding 3 years. (2) The members shall be appointed for a period not exceeding 4 years. (3) Members may be appointed for periods of different duration. (4) The period of appointment of the chairman and of any particular member shall be determined by the Secretary of State. (5) The chairman shall on the termination of his period of appointment by eligible for reappointment as chairman for such further period not exceeding 3 years or for appointment as a member for a period not exceeding 4 years, as the Secretary of State may determine. (6) The members shall be eligible for reappointment at the termination of a period of appointment for such further period not exceeding 4 years as the Secretary of State may in any particular case determine. (7) The Secretary of State may instead of reappointing the chairman or a member on the expiration of their term of office, extend their appointment for such further period as may appear reasonable in the particular circumstances; but the period by which an appointment is extended must not exceed 3 years in the case of the chairman or 4 years in the case of a member.