2. A reference in this Schedule to a map is to one of the maps numbered 1 to 3 and entitled “Maps referred to in Schedule 1 to the Non-Domestic Rating (Designated Areas) Regulations 2018”, of which prints, signed by a member of the Senior Civil Service in the Ministry of Housing, Communities and Local Government, are deposited and available for inspection at the offices of the Secretary of State for Housing, Communities and Local Government and, in relation to each map, at the offices of the billing authority to which the map relates.