UK Radon Potential

Understand and manage radon exposure in UK homes & workplaces

Every building contains radon but the levels are usually low. In some parts of the country, however, levels are higher. Where this is the case, it may be necessary to take action. This would include identifying, measuring and mitigating exposure to reduce health risks.

UK Radon Potential - Periodic Table

Why is radon risk important?

Radon is a colourless, odourless and tasteless radioactive gas. It is formed by the decay of the small amounts of uranium that occur naturally in all rocks and soils. Levels of radon vary throughout the country and will dissipate easily outside. Buildings, however, have a chimney effect and will naturally draw up air from the ground which may contain radon and allow it to seep into our homes and workplaces. A high radon exposure can have serious health implications.

The UK Health Security Agency (UKHSA) recommends that radon levels should be reduced in homes where the annual average is at or above 200 becquerels per cubic metre (200Bq/m3) — this is termed the “radon action level”. UKHSA defines radon affected areas as “those with one per cent chance or more of a house having a radon concentration at or above the radon action level”.

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UK Radon Potential

UK Radon Potential shows where higher levels of exposure are likely in the United Kingdom. The data can be used to provide an answer to one of the standard legal search enquiries (CON29) during house purchase and the level of protection required for extensions and new builds.

Radon Potential is the definitive map data set of radon-affected areas in the United Kingdom and a valuable tool in understanding and mitigating risk. It was created jointly by the British Geological Survey (BGS), Health Protection Agency (HPA), Public Health England (PHE) and Geological Survey Northern Ireland (GSNI) using long-term radon measurements, made in over 479,000 homes across Great Britain and 23,000 homes across Northern Ireland, combined with geological map data.

The product is a polygon-based vector data set at 1:50k scale, making it suitable for local to region level analysis. It is available in all major GIS data formats.

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UK Radon Potential Users

Who can use UK Radon Potential?

As radon is a public health concern, there are a wide variety of users who may benefit from this data product, including:

  • Local Authorities – Environmental Health and Building Control
  • Organisations providing environmental reports
  • Property developers and owners
  • Solicitors and conveyancers
  • Architects and Engineers
  • Environmental and radiological consultants

Available through viaEuropa

UK Radon Potential is available through viaEuropa – the award-winning hosted map and API platform from Europa Technologies.

viaEuropa delivers high quality, fully maintained, digital maps and location data directly to your web applications, desktop GIS and mobile apps. Use viaEuropa to drive location intelligent solutions quickly, easily and efficiently.

viaEuropa delivers a map visualisation of the six risk classifications in UK Radon Potential. The API service can also return the class applicable at a given coordinate. viaEuropa supports both full and partial coverage of UK Radon Potential.


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Tap into our trinity of capabilities to consume UK Radon Potential in whatever way suits you best. Whether you need a robust web-based application, an API service to boost your own development or just the raw data, we can support you. We have the expertise, credentials and capabilities to help you improve performance, streamline processes and reduce costs.

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Risk Insight

Risk Insight offers a powerful yet intuitive means of assessing risk intelligence across your property portfolio. Developed for insurers, public sector bodies and property managers, it provides a clear picture and understanding of individual risks and overall exposure. Implemented as an online service, Risk Insight can be integrated with your internal systems to provide a rich, seamless experience for your users.

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viaEuropa is the award-winning hosted map and API platform from Europa Technologies. It delivers high quality, fully maintained, digital maps and geodata directly to your web applications, desktop GIS and mobile apps. Use viaEuropa to drive location intelligent solutions quickly, easily and efficiently.

viaEuropa supports a variety of high-quality content from Ordnance Survey, Ordnance Survey Northern Ireland, Bluesky International, Government of Jersey, JBA Risk Management, British Geological Survey, MB International and OceanWise.

Europa Data Vault

Europa Data Vault

Europa Data Vault is a managed data delivery platform supporting OS data products, including OS MasterMap, VectorMap Local and AddressBase. The service delivers the latest version of all key products included in the Public Sector Geospatial Agreement (PSGA). Data is available in a range of spatial data formats and delivered by secure download.

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Data formats & delivery

UK Radon Potential is available in the following popular GIS data formats:

  • Esri Shapefile
  • Esri File GeoDatabase
  • MapInfo TAB (Extended)

Many other data formats can be supported by special arrangement.

UK Radon Potential is delivered online using the Europa Data Vault platform.

Orders, Formats & Delivery

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All data products supplied by Europa Technologies include free, world-class, lifetime support.

Got a technical issue or licensing question? No problem – we’re just a call or an e-mail away.

Arrange your digital map licensing through us with the assurance of great value from your data investment.

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How can we help you?

Do get in touch if you would like more details about UK Radon Potential (technical, licensing, pricing, etc.) or would like to arrange a personalised demo. Our product specialists will be happy to provide you with a free consultation.

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