reg 10 Radon action plan
(1) The Secretary of State must establish a national plan (“the action plan”) addressing long-term health risks from any source of radon ingress (whether from soil, building material or water) to— (a) dwellings; (b) buildings with public access; and (c) workplaces. (2) The action plan must— (a) take into account relevant issues identified in Annex XVIII to the Basic Safety Standards Directive; and (b) be updated at intervals of no more than five years.