1:--

(1) All those who are in this Act expressed to have the right of abode in the United Kingdom shall be free to live in, and come and go into and from, the United Kingdom without let or hindrance.

3

(1) Except as provided by or under this Act, where a person is not a British citizen

(a) he shall not enter the United Kingdom unless given leave to do so in accordance with the provisions of, or made under, this Act;

(b) he may be given leave to enter the United Kingdom (or, when already there, leave to remain in the United Kingdom) either for a limited or for an indefinite period

(c) if he is given limited leave to enter or remain in the United Kingdom, it may be subject to all or any of the following conditions, namely -

(i) a condition restricting his employment or occupation in the United Kingdom;

(ii) a condition requiring him to maintain and accommodate himself, and any dependants of his, without recourse to public funds; and

(iii) a condition requiring him to register with the police.

(2) The Secretary of State shall from time to time (and as soon as may be) lay before Parliament statements of the rules, or any changes in the rules, laid down by him as to the practice to be followed in the administration of this Act for regulating the entry into and stay in the United Kingdom of persons required by this Act to have leave to enter, including any period for which leave is to be given and the conditions to be attached in different circumstances;

(3) In the case of a limited leave to enter or remain in the United Kingdom, - (a) a person's leave may be varied, whether by restricting, enlarging or removing the limit on its duration, or by adding, varying or revoking conditions . . .

3A

(1) The Secretary of State may by order make further provision with respect to the giving, refusing or varying of leave to enter the United Kingdom.

(2) An order under subsection (1) may, in particular, provide for -

(a) leave to be given or refused before the person concerned arrives in the United Kingdom;

(b) the form or manner in which leave may be given, refused or varied;

(c) the imposition of conditions;

(d) a person's leave to enter not to lapse on his leaving the common travel area.

(3) The Secretary of State may by order provide that, in such circumstances as may be prescribed -

(a) an entry visa, or

(b) such other form of entry clearance as may be prescribed,

is to have effect as leave to enter the United Kingdom.

4

(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�shall be exercised by the Secretary of State�

(2) The provisions of Schedule 2 to this Act shall have effect with respect to -

.

(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�.

11:--

(1) A person arriving in the United Kingdom by ship or aircraft shall for purposes of this Act be deemed not to enter the United Kingdom unless and until he disembarks, and on disembarkation at a port shall further be deemed not to enter the United Kingdom so long as he remains in such area (if any) at the port as may be approved for this purpose by an immigration officer; and a person who has not otherwise entered the United Kingdom shall be deemed not to do so as long as he is detained, or temporarily admitted or released while liable to detention, under the powers conferred by Schedule 2 to this Act . . .

28A:--

(1) A constable or immigration officer may arrest without warrant a person

(a) who has committed or attempted to commit an offence under section 24 or 24A; or

(b) whom he has reasonable grounds for suspecting has committed or attempted to commit such an offence.