18.—(1) It shall be the duty of every local weights and measures authority to enforce these Regulations within its area.
(2) The Secretary of State may enforce Part II of these Regulations and for that purpose may appoint any person to act on his behalf.
(3) No proceedings for an offence under these Regulations may be instituted in England and Wales except by or on behalf of an enforcement authority.
(4) Nothing in these Regulations shall authorise an enforcement authority to bring proceedings in Scotland for an offence.