UK Radon Awareness Week 2026: 2nd-8th November
Know Your Risk. Protect Your Health.
Radon can be present in any part of the UK. Do you know the risk where you live or work?

Four years after updated UK radon mapping revealed a clearer picture of the risk across Great Britain, too many people remain unaware of the potential danger in their homes and workplaces.
This Radon Awareness Week, from 2nd – 8th November, the UK Radon Association (UKRA) is launching a targeted awareness campaign to close this knowledge gap and encourage householders, employers and public bodies to check the latest radon information and take action where needed.
CHECK YOUR RISK HERE – VISIT THE RADON MAP
Radon is an invisible, odourless radioactive gas associated with an estimated 1,100 lung cancer deaths in the UK every year. It can enter buildings from the ground, and the only way to know whether levels are high is to test
Newer geological mapping has highlighted changes in estimated radon risk in locations across the UK. Areas previously considered low risk may now have a greater likelihood of properties containing elevated radon levels, whilst the risk in some areas has been downgraded.
To demonstrate the shifting picture of radon risk levels across the UK, UKRA is highlighting five locations which were either previously not considered as ‘radon hotspots’, or where new mapping shows increases in risk levels:
Brighton & Hove: previously categorised as 1-3% risk, now many parts of the city are in a 5-10% risk area, meaning up to 1 in 10 homes could be affected
Barry: 83% of the mapped area of the CF62 postcode district now falls within the 10-30% risk band, upgraded from 5-10% risk in the previous indicative map
Coventry: previously not a designated radon affected area, much of the city and its surrounding area is now in the 5-10% risk band, with some parts at 10-30% risk
Leeds: areas in and around Leeds have seen rises, with the suburb of Farsley to the west of the city rising from a less than 1% risk to 5-10% risk
Lincoln: areas to the east and south of the city are now deemed to have greater than 30% risk, meaning more than 1 in 3 homes could be affected
Radon levels haven’t suddenly increased because the maps changed. Instead, improved mapping and more test results have provided a clearer understanding of a risk that was already there. Now, public awareness needs to catch up.
Radon is invisible, but the risk can be measured and managed.
Know your risk. Test for radon. Protect your health.