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) or to cancel any leave under section 3C(3A), shall be exercised by the Secretary of State; and, unless otherwise allowed 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.
The provisions of Schedule 2 to this Act shall have effect with respect to—
and for other purposes supplementary to the foregoing provisions of this Act.
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—
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.
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 British citizens or not) who stay at any such premises to supply the necessary information.