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(1)The power under this Act to give or refuse leave to enter the United Kingdom shall be exercised by immigration officers, and the power to give leave to remain in the United Kingdom, or to vary any leave under section 3(3)(a) (whether as regards duration or conditions), shall be exercised by the Secretary of State; and, unless otherwise [F1allowed by or under] this Act, those powers shall be exercised by notice in writing given to the person affected, except that the powers under section 3(3)(a) may be exercised generally in respect of any class of persons by order made by statutory instrument.
(2)The provisions of Schedule 2 to this Act shall have effect with respect to—
(a)the appointment and powers of immigration officers and medical inspectors for purposes of this Act;
(b)the examination of persons arriving in or leaving the United Kingdom by ship or aircraft F2. . ., and the special powers exercisable in the case of those who arrive as, or with a view to becoming, members of the crews of ships and aircraft; and
(c)the exercise by immigration officers of their powers in relation to entry into the United Kingdom, and the removal from the United Kingdom of persons refused leave to enter or entering or remaining unlawfully; and
(d)the detention of persons pending examination or pending removal from the United Kingdom;
and for other purposes supplementary to the foregoing provisions of this Act.
(3)The Secretary of State may by regulations made by statutory instrument, which shall be subject to annulment in pursuance of a resolution of either House of Parliament, make provision as to the effect of a condition under this Act requiring a person to register with the police; and the regulations may include provision—
(a)as to the officers of police by whom registers are to be maintained, and as to the form and content of the registers;
(b)as to the place and manner in which anyone is to register and as to the documents and information to be furnished by him, whether on registration or on any change of circumstances;
(c)as to the issue of certificates of registration and as to the payment of fees for certificates of registration;
and the regulations may require anyone who is for the time being subject to such a condition to produce a certificate of registration to such persons and in such circumstances as may be prescribed by the regulations.
(4)The Secretary of State may by order made by statutory instrument, which shall be subject to annulment in pursuance of a resolution of either House of Parliament, make such provision as appears to him to be expedient in connection with this Act for records to be made and kept of persons staying at hotels and other premises where lodging or sleeping accommodation is provided, and for persons (whether [F3British citizens] or not) who stay at any such premises to supply the necessary information.
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