Overview

In order to access these services you must be in possession of a national licence for the data from the OS which covers the relevant datasets

The OS MasterMap 'Carto' base map is designed to be used as background mapping providing a seamless map view from small to large scales with a consistent cartographic representation. 

The sources of data are Ordnance Survey Vector Map District data for small and mid-scales, and Open Map Local & MasterMap for the largest scales.

The currency of the data is; 

• MasterMap - 01/2023
• MasterMap Greenspace - 10/2022
• Vector Map District - 11/2022
• Open Map Local - 10/2022
• Open Greenspace - 10/2022
• OpenRivers - 10/2022

The coverage of the map service is GB. 
The map projection is British National Grid. 
The map service is cached down to 1:500, but can be viewed at an additional level of detail at 1:250 scale. 

Updated: 06/03/2023