Radon Risk in Oxfordshire

Last reviewed: March 2026 · Data: BGS Indicative Atlas v3.

29 postcode districts · 8 classified High or above · Average risk class: 2.2 / 5

Radon is a naturally occurring radioactive gas and the second largest cause of lung cancer in the UK. Risk varies significantly by location — the areas below show how Oxfordshire compares. 8 districts in Oxfordshire are classified High risk or above — testing is strongly recommended in these areas.

All Districts in Oxfordshire

District Risk Level % Homes
OX15 Highest >30%
OX16 Highest >30%
OX20 Highest 10–30%
OX5 Highest 10–30%
OX7 Highest 10–30%
OX28 High 3–5%
OX39 High 3–5%
RG9 High 3–5%
OX25 Moderate 1–3%
OX26 Moderate 1–3%
OX27 Moderate 1–3%
OX33 Moderate 1–3%
OX4 Moderate 1–3%
OX49 Moderate 1–3%
OX6 Moderate 1–3%
OX1 Low <1%
OX10 Low <1%
OX11 Low <1%
OX12 Low <1%
OX13 Low <1%
OX14 Low <1%
OX18 Low <1%
OX2 Low <1%
OX29 Low <1%
OX3 Low <1%
OX44 Low <1%
OX8 Low <1%
OX9 Low <1%
SN7 Low <1%

Get a Radon Test for Oxfordshire

The only way to know your home's radon level is to test. Radon levels in Oxfordshire are classified as Moderate — a test takes 3 months and costs around £29.

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