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OS OnDemand Web Map Tile Service

Web Map Tile Service (WMTS) delivers pre-rendered tiles over the internet making it ideal for fast data serving to external internet sites.

OS OnDemand

The OS OnDemand Web Map Tile Service (WMTS) delivers pre-rendered tiles over the internet making it ideal for fast data serving to external internet sites.

To use OS OnDemand WMTS you will need:

  • Current GB coverage licences for the products you wish to access
  • A licence for the service
  • An API key which we will send you when you apply for a licence.
  • Compliant GIS or a web browser

The API key is unique to your licence and you must therefore include it in any URL request or created code used to access the service. If you want to add more URLs to your API key, please contact us and we will register the new URLs against your API key.

Accessing Web Map Tile Service

Our WMTS can be accessed in the following ways. Click on the tabs below for details:

  • OGC WMTS Tile Requests via GIS or web based clients
  • Via the API through an Internet Browser
  • XYZ Style Tile Requests via GIS or web based clients

Our tile service supports the OGC WMTS standard and can be accessed via GIS or web based clients. The WMTS offers the consistently styled zoom map stack of mapping using OGC WMTS tile requests.

To access the service you need:

  • compliant GIS (such as ArcGIS 10.1 or Geocortex)
  • a URL provided by us to enable your client software to link to our tile services Get Capabilities document (see below example)
  • client referrer URL registered against your API key. This is the url that your client software returns when making a call to our service.

Example URL via a web map browser:
http://ondemandapi.ordnancesurvey.co.uk/osmapapi/wmts/INSERT_YOUR_KEY_HERE/ts?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetTile&LAYER=osgb&STYLE=default&FORMAT=image/png&TILEMATRIXSET=ZoomMap&TILEMATRIX=00&TILEROW=3&TILECOL=1&URL=client_referrer_registered_url

We will be adding alternative authentication methods such as http basic and IP ranges at a later date.

Please contact us should you wish to evaluate this method.

Mapping Layers and Look-ups

The following mapping layers are available through OnDemand WMTS. In order to achieve a friendly zoomed in/out effect, each product type has a suitable resolution measured in meters per pixel at which it should be viewed in a web application.

Each product type (except Overview maps) has been provided at two zoom levels or resolutions. When a product is Resampled it is twice the original resolution. 'R' denotes a resampled product.

Product Resolution Index Tile Size (px) Tile size (m)
OS VectorMap® Local 1 VML 250 250
OS VectorMap® Local Resampled 2 VMLR 250 500
1:25 000 Scale Colour Raster 2.5 25K 200 500
1:25 000 Scale Colour Raster Resampled 4 25KR 250 1000
1:50 000 Scale Colour Raster 5 50K 200 1000
1:50 000 Scale Colour Raster Resampled 10 50KR 200 2000
*GB Overview2 500 OV2    
*GB Overview+ 1000 OV1 200 200000
*GB Overview 2500 OV0    
OS OpenData™ products        
OS Street View® (1:10 000 scale) 1 SV 250 250
OS Street View® (1:10 000 scale) Resampled 2 SVR 250 500
OS VectorMap® District 2.5 VMD 200 500
OS VectorMap® District Resampled 4 VMDR 250 1000
1:250 000 Scale Colour Raster 25 250K 200 5000
1:250 000 Scale Colour Raster Resampled 50 250KR 200 10000
MiniScale® 100 MS 200 20000
MiniScale® Resampled 200 MSR 200 40000
1:50 000 Scale Gazetteer   **    
Boundary-Line™   **    
Code-Point Open   **    
Zoom Map Stack        
Generated from Strategi® 896 CS00 250 224000
Generated from Strategi® 448 CS01 250 112000
Generated from Strategi and Land-Form PANORAMA® 224 CS02 250 56000
Generated from Strategi and Land-Form PANORAMA® 112 CS03 250 28000
Generated from Strategi and Land-Form PANORAMA® 56 CS04 250 14000
Generated from Strategi and Land-Form PANORAMA® 28 CS05 250 7000
Generated from OS VectorMap® District & Strategi® & Land-Form PANORAMA® 14 CS06 250 3500
Generated from OS VectorMap® District & Strategi® & Land-Form PANORAMA® 7 CS07 250 1750
Generated from OS VectorMap® District & Strategi® & Land-Form PANORAMA® 3.5 CS08 250 875
Generated from OS VectorMap® Local 1.75 CS09 250 437.5
Generated from OS VectorMap® Local 0.875 CS10 250 218.75

*These do not form part of the Ordnance Survey product portfolio but are used to provide context at very small scales. No licensing restrictions apply.
** Look ups

There are two options for viewing the map content as a standard set of files or as a consistent seamless zoom stack. If you wish to get access to the full zoom map stack you will need to be licensed for GB coverage of our OSVectorMap Local product. Once this has been arranged, the layers will be made available. You will automatically get access to layers CS00 to CS08.