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Opening up OS MasterMap data

Why the Open MasterMap Implementation Programme matters.

The OS Open MasterMap Implementation Programme helped shape new access and sharing arrangements for OS MasterMap.

The opportunities we’ve opened up from this work will be delivered as part of the Public Sector Geospatial Agreement (PSGA)

Listening to our users

The PSGA delivers the governments June 2018 commitments to improve access to OS core geospatial data, and release core identifiers under OGL. So make sure you explore our products like OS Open Zoomstack, the OS Data Hub, and the new derived data and identifier freedoms.

To make sure the products and services we have been developing satisfied user requirements, we worked closely with a Customer Advisory Group. This was a mix of public and private sector organisations. Members of the advisory group brought their industry expertise to provide feedback from many different perspectives. We also carried out trials with over 1500 users throughout the Programme.

We intend to use the lessons learned from our engagement with the Customer Advisory Group to shape how the PSGA delivers value for our customers. We think listening to our customers is key to our ongoing improvement.

Gathering of people

How the engagement helped us deliver most value

We achieved the goals of the project, which were:

Significantly more geospatial data will be fully open for businesses and developers to use, free and without restriction: 

  • We'll publish a MasterMap Topography Layer Topographic Identifiers (TOIDs) dataset in summer 2020, with a generalised XY coordinate, for all buildings, structures, land cover and transport infrastructure.
  • We’ll publish a list of all UPRNs with their XY coordinates.
  • We’ll publish USRNs with simplified line geometry, to cover all of Britain’s highways.
  • We’ve extended the type of derived data licensees will be able to publish under open terms from summer 2020. Our licensing pages help you understand what public sector customers can publish under OGL
  • Our new Open ID policy enables and encourages the use of our identifiers to join datasets and combine the value of our data with the value of yours.

Start-ups will be able to deliver new products and services with the data using the free threshold

Some businesses will not need to pay at all for their use of OS data because of the use of the free threshold.

  • Up to £1,000 per calendar month’s worth of OS MasterMap and our renowned 1:25 000 and 1:50 000 datasets will be available to anyone to use in developing apps, products and services for use by 3rd parties, including the public – using either OS’s APIs or their own APIs from summer 2020.
  • Three APIs will use this free threshold: Web Map Tile Service, Vector Tile Service, Web Feature Service.
  • Unlimited, free access to OS OpenData via APIs for anyone to use for any purpose.

New innovations will be possible in the housing market

The use of the identifiers released under PSGA to join a range of currently published government data, with the potential new datasets that will be released as a result of the changes to the derived data and Open ID policies could lead to identification of sites suitable for building new homes

New users will be able to understand the pricing structure for the data more easily following the OS changes, removing uncertainty around cost of use

We've designed straightforward pricing plans tailored to meet the needs of customers.

Publish data in new ways to improve the quality of the data and make it easier to use

We've developed and launched OS Open Zoomstack and improved the format for nine of our OpenData products. They are available in Geopackage format, an open standard from the Open Geospatial Consortium.

Going forward we will be releasing our premium datasets in new formats, making them easier to use. 

Getting different parts of OS data to work together better with open identifiers

We’re launching a Linked Identifiers dataset as OS OpenData and a new API in summer 2020.

Next steps

We’re always working to improve location data and how you can make use of it. The last stage of our OS MasterMap Implementation Programme will be:

  • A trial to validate our proposal for what our Open USRN dataset would contain and how it would be structured, following a series of discovery activities that took place in 2019.

  • A trial to decide the best way to incorporate details about highways such as who maintains the roads into the OS Features API from summer 2020.

If you’re interested in being part of either of these trials, fill in the form below.

You can participate in our data trials

You can sign up for the trials you’re interested in and give us your feedback through the OS Open MasterMap data trial page.

Open MasterMap FAQs