s 27 Safeguards etc. in connection with exercise of powers of entry
(1) A person who enters premises under an authorisation given under section 12(1) or 16(2) (“ the authorised person ”) must, if requested to do so by a person on the premises, produce evidence of the authorised person's identity and entitlement to exercise the power. (2) Subsections (3) to (5) apply where a person (“ the authorised person ”) enters premises under a warrant issued under section 12(2), 16(4) or 21(1). (3) If the occupier of the premises is present, the authorised person must— (a) produce evidence of the authorised person's identity, (b) produce a copy of the warrant, and (c) supply the occupier with a copy. (4) If the occupier of the premises is not present, but another person appearing to the authorised person to be in charge of the premises is, subsection (3) applies as if any reference to the occupier were a reference to the person in charge of the premises. (5) If neither the occupier nor any other person appearing to the authorised person to be in charge of the premises is present, the authorised person must leave a copy of the warrant in a prominent place on the premises. (6) A person who enters premises under an authorisation given or warrant issued under section 12(1) or (2), 16(2) or (4) or 21(1) must do so at a reasonable hour unless it appears to the person that the purpose of entry would be frustrated by entry at a reasonable hour. (7) A person who enters premises which are unoccupied under an authorisation given or warrant issued under section 12(1) or (2), 16(2) or (4) or 21(1) must take all reasonable steps to ensure that the premises are left as secure against entry as they were when the person found them. (8) Subsections (2) to (6) do not apply where the authorised person is a constable who enters the premises under a warrant issued under section 12(2), 16(4) or 21(1).