Notes: Radon is covered by building regulations.  This is devolved within the UK. An example of the regulations (covering England and Wales) is here: <<http://www.legislation.gov.uk/uksi/2010/2214/contents/made>>. In England and Wales the regulations are supported by an Approved Document. Part C includes radon (<<https://www.gov.uk/government/publications/site-preparation-and-resistance-to-contaminates-and-moisture-approved-document-c>>). This is supported by guidance from the Building Research Establishment. British Research Establishment published in 2015 BR211 report (Radon: Guidance on protective measures for new buildings). The report identifies the areas of England, Wales, Scotland and Northern Ireland where measures should be taken to provide protection against radon and provides guidance on implementing the protective measures.
  