The Level Of Potential Radon Can Be Found On The Public Health England Website
UKradon – UK maps of radon
It may collect in buildings, and under certain conditions can reach concentrations above which the risk to people in the workplace requires control under the IRR.
As mentioned above, radon (more properly known as radon-222) comes from uranium which occurs naturally in many different types of rocks and soils. Since granite contains relatively high levels of uranium, many people think that it is only granite areas of the UK, such as the South West of England, that have high radon levels. This is untrue and many other parts of the country have high radon levels.