The OS Data Hub is Ordnance Survey's platform for accessing Great Britain's national mapping. It provides free OS OpenData products — including OS Open Roads, OS Open Names, Boundary-Line, and the OS Maps basemap — alongside premium large-scale data for registered and commercial users.
Ordnance Survey is the authoritative source for precise British base mapping, so the Data Hub is where to go when administrative open data is not detailed enough. Free products can be downloaded as GeoPackage or Shapefile, or consumed live through OS APIs and vector tiles for direct use in a mapping tool.