Radon is a naturally occurring radioactive gas that comes from very small amounts of uranium in all rocks and soils. It is present throughout the UK but due to geological and soil conditions higher concentrations may exist in certain areas.
The Health Protection Agency (now Public Health England) and the British Geological Survey have compiled a radon dataset for England and Wales that provides a radon-probability banding for individual property with a valid postal address. A search can be carried out on the UKradon website. The website also provides further information about radon. A simplified version of the dataset has been published as the Indicative Atlas of Radon in England and Wales (HPA-RPD-033) and this atlas is available from the Public Health England website.