OS MasterMap Topo
In an organisation of any kind, OS MasterMap Topo gives you the confidence to make location-based decisions about assets, services, environmental risks, customers and operations. The product contains features grouped into themes, such as buildings, land and water, to enable more flexible data selection.
OS MasterMap Topo is the most detailed vector mapping available for Great Britain and is captured and designed for display at 1:1250, 1:2500 and 1:10000 scales in urban, rural and mountain/moorland areas respectively.
The product is updated continuously and released every six weeks.