What data is available?
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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.
This is a detailed OS basemap made from and .
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.
The following table details the datasets that can be used as overlays to the basemap to add additional information:
The OS MasterMap Water Network Layer product (also referred to as OS MasterMap Networks – Water Layer) will become End of Life on 31 March 2026. As of this date, access to the product will be removed from the OS Vector Tile API. Further information is available on the .
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
This is a polygon layer made from OS MasterMap Greenspace Layer - Britain’s most comprehensive dataset of urban greenspaces.
Premium Data
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
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. OS MasterMap Water Network Layer will become End of Life on 31 March 2026. As of this date, this product will be removed from the OS Vector Tile API.
Premium Data
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
This is a line layer made from OS Detailed Path Network - a connected path network covering Britain’s National Parks.
Premium Data
The table below shows the resolution (meters per pixel) and scale of the zoom levels within the EPSG:3857 tile matrix set.
The zoom levels start at 6 to fit in with the industry standard initial zoom layer. This improves the interoperability of this tile matrix set with third party tools and applications.
6
1222.992452562495
1:4,622,324.43
Open data
7
611.496226281245
1:2,311,162.22
Open data
8
305.74811314069
1:1,155,581.11
Open data
9
152.874056570279
1:577,790.55
Open data
10
76.4370282852055
1:288,895.28
Open data
11
38.2185141425366
1:144,447.64
Open data
12
19.1092570712683
1:72,223.82
Open data
13
9.55462853563415
1:36,111.91
Open data
14
4.777314267817075
1:18,055.95
Open data
15
2.388657133974685
1:9,027.98
Open data
16
1.19432856698734
1:4,513.99
Premium data
17
0.597164283427525
1:2,256.99
Premium data
18
0.2985821417799085
1:1,128.50
Premium data
19
0.1492910708238085
1:564.25
Premium data
The table below shows the resolution (meters per pixel) and scale of the zoom levels within the EPSG:27700 tile matrix set.
The zoom levels start at 0 rather than at 6 used for the EPSG:3857 tile matrix set, but the range of resolutions & scales is comparable. EPSG:27700 zoom level 0 is similar to EPSG:3857 zoom level 6.
0
3584
1:13,545,799.68
Open data
1
1792
1:6,772,899.84
Open data
2
896
1:3,386,449.92
Open data
3
448
1:1,693,224.96
Open data
4
224
1:846,612.48
Open data
5
112
1:423,306.24
Open data
6
56
1:211,653.12
Open data
7
28
1:105,826.56
Open data
8
14
1:52,913.28
Open data
9
7
1:26,456.64
Open data
10
3.5
1:13,228.32
Open data
11
1.75
1:6,614.16
Open data
12
0.875
1:3,307.08
Premium data
13
0.4375
1:1,653.54
Premium data
14
0.21875
1:826.77
Premium data
15
0.109375
1:413.39
Premium data