6.—(1) Subject to paragraph (2), a person who contravenes regulation 4 is guilty of an offence and will be liable on summary conviction to a fine not exceeding level 5 on the standard scale.
(2) A pharmacist or a person acting in the course of the activities of a hospital who contravenes regulation 4(b) by reason only that a document purporting to be the appropriate medical certificate is not genuine does not commit an offence if, having exercised all due diligence, that person has reasonable cause to believe that the document was an appropriate medical certificate.