OS Boundary-line information

Features & Benefits
High-resolution dynamic backdrop map data provides:
  • a detailed administration boundary dataset with full Great Britain coverage
  • all official administration boundaries
  • dynamic map service enabling feature query and analysis
  • designed to be used with basemap services

As one of our range of dynamic map services, Ordnance Survey's Boundary-Line provides all levels of administrative boundaries in Great Britain specifically designed for online applications.

At a 1:10 000 Scale, OS Boundary-Line is the definitive administrative dataset for Great Britain. The product is updated twice a year.

The dynamic Boundary-Line base map is ideal for use in a range of applications such as development and land use planning, asset management and market analysis.

OS Boundary-Line is fully compatible with other Ordnance Survey digital data products and other GB map services and data supplied by Esri UK.

Central Government, Defence, Education, Insurance, Local Government, Public Safety, Utilities, Private sector

Background mapping, Administration boundaries

Data Type
Dynamic Map Service

Great Britain

Data Scale
The nominal scale of OS Boundary-Line is 1:10 000.
Recommended minimum to maximum scale range for viewing is 1:5 000 to 1:15 000 Scale. It is best viewed between 1:7 000 and 1:10 000 Scale.

Update Frequency

Coordinate Reference System
British National Grid (OSGB36)