9.—(1) The Agency must enforce the provisions of these Regulations in so far as they fall to be observed by a licensee.
(2) The Agency and each food authority within its area must each enforce the provisions of regulation 4 in so far as they fall to be observed by any person other than a licensee.
(3) Each food authority must enforce within its area the provisions of these Regulations except to the extent that they fall to be enforced under paragraph (1) or (2).
(4) Each authority concerned in the administration of these Regulations must give to each other authority so concerned such assistance and information as that other authority reasonably requires for the purposes of its duties under these Regulations.