A person executing a warrant must—
(a) have the warrant with him or her; and
(b) produce it on initial entry and, if requested, at any subsequent time; and
(c) identify himself or herself and any person assisting or accompanying him or her to the owner or occupier or person in charge of the place if that person is present; and
(d) produce evidence of his or her identity and the identity of any person assisting or accompanying him or her.