This series of street maps aims to provide clear, legible mapping with easily identifiable landmarks and a large index. They incorporate current digital data from Ordnance Survey. Each atlas in the range contains: a clear road hierarchy with a clever use of colour for easy navigation; prominent landmarks and detail for motorists; clearly marked one-way streets; easily identifiable symbols; a distance measure on each page; easy-to-read street names in clear type; clear district names and area postcodes; and an index with coloured letter headers for quick reference.