4.—(1) It shall be the duty of each port health authority to enforce and execute this Order within its district.
(2) The enforcement and execution of this Order in relation to any place not situated in the district of a port health authority shall be the duty of any food authority for the area in which that place is situated.
(3) Each port health or food authority, as appropriate, shall give such assistance and information to the Minister as he may request for the purpose of his duties under section 13 of the Act in connection with this Order.