(1)A person entering premises by virtue of section 99, or by virtue of a warrant under section 100 or 101, may take such other persons and such equipment as the person considers appropriate.
(2)If the occupier of premises that a person is authorised to enter by a warrant under section 100 or 101 is present at the time the person seeks to execute the warrant—
(a)the occupier must be told the person’s name;
(b)if not a constable in uniform, the person must produce to the occupier documentary evidence that the person is a constable or authorised officer;
(c)the person must produce the warrant to the occupier;
(d)the person must supply the occupier with a copy of it.
(3)If premises that a person is authorised to enter by a warrant under section 100 or 101 are unoccupied, or if the occupier is temporarily absent, then on leaving the premises the person must leave them as effectively secured against unauthorised entry as when the person found them.