20Enforcement provisions
(1)A relevant authority shall have power to purchase apparatus, and to authorise any of their officers to purchase apparatus on their behalf, for the purpose of ascertaining whether sections 17 and 18 and orders made under those sections (in this section referred to as " the relevant provisions") are being complied with.
(2)Every local weights and measures authority in Great Britain shall have power to enforce the relevant provisions within their area; but nothing in this subsection shall be construed as authorising a local weights and measures authority in Scotland to institute proceedings for an offence.
(3)In this section " relevant authority " means—
(a)in relation to Great Britain, the Secretary of State or a local weights and measures authority on whom a power to enforce the relevant provisions is conferred by subsection (2);
(b)in relation to Northern Ireland, the Department of Commerce for Northern Ireland ; and
(c)in relation to the Isle of Man, the Board of Consumer Affairs.