Radon is a colourless, odourless radioactive gas. It is formed by the decay of small amounts of uranium that occur naturally in all rocks and soils.
The levels of radon gas produced by this decay will vary depending on where you are in the country. The UK Health Security Agency have published an interactive map showing radon levels across the UK.
Visit UKRadon for more information about radon.
Radiation and radioactive substances
The Environment Agency are responsible for the control of radioactive substances.
The UK Health Security Agency provide advice on exposure to electromagnetic fields.