s 6 Power of Authority to enter upon any premises
6.—(1) The Authority may, for the purposes of this Act, by its employees, agents or contractors, enter at all reasonable hours (or at any time in the event of an emergency) into and upon any premises for the purpose of performing its duties authorised by this Act without being liable to pay any person any fee, charge or expense or being subject to any legal proceedings or molestation on account of the entry or of anything done in any part of the premises under this Act. (2) Except in the event of an emergency, such employee, agent or contractor may not enter upon any premises under this section unless —(a) not less than 6 hours’ notice of the intended entry has been given to the occupier; and (b) if required to do so, he or she has produced evidence of his or her authority.