3.—(1) The district council must enforce these Regulations in so far as they relate to retail sale.
(2) The Department, the Commissioners and the Agency must enforce these Regulations insofar as they relate to import and export.
(3) Otherwise, the Agency or the Department must enforce these Regulations.
(4) Nothing in this regulation authorises the Commissioners to institute proceedings for an offence.
(5) The Department is the competent authority for the Council and Commission Regulations enforced by these Regulations.