Duration and continuance of registration.
18.—(1) A registration (whether it is the first registration or a registration continued under this section) shall be for the prescribed period and on the expiry thereof the relevant entry shall be removed from the register unless the registration is continued as aforesaid.
(2) The prescribed period (which shall not be less than one year) shall be calculated—
(a) in the case of a first registration, from the date on which the relevant entry was made in the register, and
(b) in the case of a registration which has been continued under this section, from the date from which it was so continued.
(3) The Commissioner shall, subject to the provisions of this Act, continue a registration, whether it has previously been continued under this section or not.
(4) Notwithstanding the foregoing provisions of this section, the Commissioner may at any time, at the request of the person to whom an entry relates, remove it from the register.