Radon Potential Indicative Atlas for Great Britain

Version 3 of the joint UKHSA-BGS Indicative Atlas maps radon gas risk across Great Britain using 1 km grid squares. The dataset classifies each square by its highest estimated percentage of homes exceeding the 200 Bq m-3 Action Level. It provides a simplified, indicative overview of radon potential to identify affected areas.

Use Cases

• Classify 1 km grid squares by their highest radon potential category to identify high-risk zones for public health planning.
• Estimate the percentage of homes above the Radon Action Level per grid square for regional risk assessment.
• Analyze radon potential distributions across Great Britain to correlate with underlying geological features.
• Support building regulation and radon protection measures by mapping indicative affected areas defined as ≥1% chance of exceeding 200 Bq m-3.

Strengths

• Developed by authoritative bodies UK Health Security Agency and British Geological Survey.
• Provides nationwide coverage for Great Britain at a 1 km grid resolution.
• Based on detailed mapping of radon potential defined by the estimated percentage of homes above the Action Level.

Limitations

• Dataset is described as 'indicative rather than definitive', with each square classed by the highest potential found within it, which may overgeneralize local variation.
• No sample data or specific column schema (e.g., grid ID, potential class, percentage estimate) is provided in the input, limiting immediate analytical clarity.
• The definitive map is noted as a separate 'Digital Radon Potential' dataset, suggesting this atlas is a simplified derivative.

Provenance

Source

British Geological Survey (BGS) in collaboration with UK Health Security Agency (UKHSA).

Collection Method

Results of detailed mapping of radon potential, with each 1 km grid square classed by the highest radon potential found within it.

Time Range

null

Freshness

Last updated March 2026.

Geography

Great Britain.