If a person acts in contravention of, or fails to comply with, any regulations made by the Minister or the Secretary of State under this Act (other than regulations made under section twelve, thirty-four, forty-eight, forty-nine or sixty-five thereof) and contravention thereof, or failure to comply therewith, is not made an offence under any other provision of this Act, he shall for each offence be liable on summary conviction to such maximum "penalty not exceeding a fine of twenty pounds as may be prescribed by the regulations.