Defence
37. In any proceedings for an offence consisting of a contravention of regulation 4(3), regulation 5(1), (3), (4), (5), (6) or (7), regulation 7(2), (4) or (5), regulation 9(4), regulation 22(3), regulation 31(2) or regulation 36, it shall be a defence for the manager concerned to prove that he took all reasonable steps and exercised all due diligence to avoid the commission of the offence.