(1) Subject to subsection (2), for the purposes of the administration of this Act and the regulations, an authorised officer may exercise the powers conferred by or under this Act and the regulations to ascertain whether the provisions of this Act or the regulations have been, or are being, complied with.
(2) Unless an authorised officer is of the opinion that it is necessary to do so because of an emergency, an authorised officer must not enter any privately owned property unless—
(a) the owner has given consent; or
(b) the authorised officer has given the owner reasonable notice of the intention to enter at a reasonable time.