In the 1971 Act, after section 28J, insert—
(1)A warrant may be executed by any immigration officer.
(2)A warrant may authorise persons to accompany the officer executing it.
(3)Entry and search under a warrant must be—
(a)within one month from the date of its issue; and
(b)at a reasonable hour, unless it appears to the officer executing it that the purpose of a search might be frustrated.
(4)If the occupier of premises which are to be entered and searched is present at the time when an immigration officer seeks to execute a warrant, the officer must—
(a)identify himself to the occupier and produce identification showing that he is an immigration officer;
(b)show the occupier the warrant; and
(c)supply him with a copy of it.
(5)If—
(a)the occupier is not present, but
(b)some other person who appears to the officer to be in charge of the premises is present,
subsection (4) has effect as if each reference to the occupier were a reference to that other person.
(6)If there is no person present who appears to the officer to be in charge of the premises, the officer must leave a copy of the warrant in a prominent place on the premises.
(7)A search under a warrant may only be a search to the extent required for the purpose for which the warrant was issued.
(8)An officer executing a warrant must make an endorsement on it stating—
(a)whether the persons or articles sought were found; and
(b)whether any articles, other than articles which were sought, were seized.
(9)A warrant which has been executed, or has not been executed within the time authorised for its execution, must be returned—
(a)if issued by a justice of the peace in England and Wales, to the justices’ chief executive appointed by the magistrates’ court committee whose area includes the petty sessions area for which the justice acts;
(b)if issued by a justice of the peace in Northern Ireland, to the clerk of petty sessions for the petty sessions district in which the premises are situated;
(c)if issued by a justice of the peace in Scotland, to the clerk of the district court for the commission area for which the justice of the peace was appointed;
(d)if issued by the sheriff, to the sheriff clerk.
(10)A warrant returned under subsection (9)(a) must be retained for 12 months by the justices’ chief executive.
(11)A warrant issued under subsection (9)(b) or (c) must be retained for 12 months by the clerk.
(12)A warrant returned under subsection (9)(d) must be retained for 12 months by the sheriff clerk.
(13)If during that 12 month period the occupier of the premises to which it relates asks to inspect it, he must be allowed to do so.
(14)“Warrant” means a warrant to enter and search premises issued to an immigration officer under this Part or under paragraph 17(2) of Schedule 2.”