Jump to the following:

Internet cookies at Ordnance Survey

We use cookies on this website in order to make your visit run more smoothly and to give us statistics that help us plan future enhancements. Learn more about the cookies we use.

OS MasterMap Topography Layer

When accuracy really counts, choose OS MasterMap Topography Layer. The most detailed, current and comprehensive map dataset of Great Britain, it enables you to take better decisions and manage your assets more effectively.

OS MasterMap Topography Layer

Or contact us if you have a question that's not answered here…

OS MasterMap Topography Layer

Benefits and key features

The foundation of the OS MasterMap family, the Topography Layer gives you the context you need to interpret addresses, routes, imagery and all of the other information offered by the other layers, as well as complementary terrain and gazetteer datasets.

  • Take the best-informed location-based decisions possible about customers, operations, assets and environmental risks.
  • Understand in detail the potential impact on your customers, assets and sites of interest of developments by you or third-parties.
  • Identify and communicate clearly your proposals or findings to customers, partners or the general public.
  • Undertake effective scenario planning, situational awareness, strategic event management and support of security operations.
  • Start by using it as a simple map, if you wish, then take advantage of its advanced features as your business requirements develop.
  • Building height attribution – alpha data now available – enables you to make simple 3D visualisations of the urban environment.
  • If you're in the public sector, your organisation can use it at no extra charge thanks to our mapping agreements.

Unrivalled detail

View incredible levels of detail, right down to the shapes of individual houses, fences and individual railway tracks.

Unrivalled detail

Referencing framework

Easily locate and geo-tag your assets, thanks to the topographic identifier (TOID) at the heart of all OS MasterMap layers.

Referencing framework

Building height attribution

If you're an existing customer, download our Alpha release of building height data. It now covers some 10,000 square km of major towns and cities.

Building height attribution

OS MasterMap Topography Layer

Case studies

OS MasterMap Topography Layer

Licensing choices

You can license OS MasterMap Topography Layer under a range of different contractual terms, tailored to how you wish to use it.

Find the right licence for you.

OS MasterMap Topography Layer

Specifications

FormatGML 2.1.2
Data structureVector (points, lines, polygons and text).
ThemesAdministrative boundaries, buildings, heritage and antiquities, land, rail, roads, tracks and paths, structures, terrain and height, and water.
Scale1:1250 to 1:10 000
Update frequencySix weekly – Continuous and cyclic revision (synchronised with other layers).
SupplyFTP (for orders under 2 Gb) and DVD
CoverageGreat Britain (define your own area of interest or take advantage of pre-defined areas of interest).

OS MasterMap Topography Layer

Related products

Back to top