In the case of houses intended or used for occupation by the working classes, the name and address of the medical officer of health for the district and of the landlord or other person who is directly responsible for keeping the house in all respects reasonably fit for human habitation shall be inscribed in every rent book or, where a rent book is not used, shall be delivered in writing to the tenant at the commencement of the tenancy and before any rent is demanded or collected ; and, if any person demands or collects any rent in contravention of the provisions of this section, he shall in respect of each offence be liable on summary conviction to a fine not exceeding forty shillings.