What data is available?

Through OS Vector Tile API you can connect to different layers for different use cases, including a detailed basemap and several data overlays.

The map features don’t contain the complete list of attribution from the full data products. We have selected attribution that is useful for visualisation. The inclusion of unique IDs (where available) allow you to cross reference with the full product, for example with OS Features API.

Basemap

This is a detailed OS basemap made from OS Open Zoomstack and OS MasterMap Topography Layer.

The OS MasterMap Topography Layer building features have a property called RelHMax (height from the ground to the top of the building) which you can use to extrude and create 3D buildings.

Basemap endpoint

https://api.os.uk/maps/vector/v1/vts

Data overlays

The following table details the OS NGD datasets that can be used as overlays to the basemap to add additional information:

Overlay	layer-name	Description	Data Plan
Boundaries	boundaries	This is a polygon layer made from Boundary-Line which can be used for identifying boundaries (for example, Counties, Districts and Parishes) and creating choropleth map overlays.	OS OpenData
Greenspace	greenspace	This is a polygon layer made from OS MasterMap Greenspace Layer - Britain’s most comprehensive dataset of urban greenspaces.	Premium Data
Sites	sites	This is a polygon layer made from OS MasterMap Sites Layer. Contains the site extents for key sites such as schools, hospitals and train stations and their main access points.	Premium Data
Water	water	This is a line layer made from OS MasterMap Water Network Layer. Contains detailed centre lines following the curve of the waterways precisely, including rivers, streams and canals.	Premium Data
Highways	highways	This is a line layer made from OS MasterMap Highways Network. Contains detailed centre lines for roads, paths and ferry routes and includes the links that connect them.	Premium Data
Paths	paths	This is a line layer made from OS Detailed Path Network - a connected path network covering Britain’s National Parks.	Premium Data

Data overlays endpoint

https://api.os.uk/maps/vector/v1/vts/<layer-name>