A licensed pilot shall not demand or receive, and a master shall not offer or pay to any licensed pilot, pilotage charges of amounts which he knows are greater or less than the amounts authorised by law, and, if a pilot or master acts in contravention of this section, he shall be liable on summary conviction in respect of each offence to a fine not exceeding—
(a)in England and Wales and in Scotland, level 3 on the standard scale,
(b)in Northern Ireland, £200.