5.—(1) A custody officer at the police station must, subject to paragraph (2) and regulations 6 and 7—
(a)review the behaviour of D at least once an hour and determine whether the circumstances in regulation 2(1)(a)(i) and (ii) exist, and
(b)where those circumstances are determined not to exist, arrange for D to be taken to a place of safety other than a police station.
(2) Before making a determination under paragraph (1)(a), the custody officer must, where reasonably practicable, consult the healthcare professional that carried out the most recent check by virtue of regulation 4(1)(a).