How do I find a radon mitigation contractor?

UKHSA and the BRE maintain a directory of certified radon remediation contractors at ukradon.org/information/directory. Only use contractors who are trained and assessed to BRE/UKHSA standards to ensure the work meets required quality levels.

Do I need an accredited company to test my home?

For a result you can rely on — especially for property transactions, workplace compliance, or remediation decisions — yes. Accredited labs use UKAS-approved alpha-track detectors and laboratory analysis. Non-accredited online products may give inaccurate results.

Check radon risk by postcode:

Radon Testing Companies in the UK

Last reviewed: April 2026 · Based on UKHSA and BRE guidance.

Not all radon tests are equal. For a result you can act on — whether for your home, a workplace, or a property sale — you need an accredited UK laboratory. Here's who to use and why accreditation matters.

Accredited Radon Testing Providers in the UK

UK Radon (ukradon.org)

Recommended

Run by the UK Health Security Agency (UKHSA), UK Radon is the national radon measurement service and the go-to for home testing. They supply accredited 90-day alpha-track detectors by post, analyse them in their UKAS-accredited laboratory, and return a formal results report with clear guidance.

Home test cost

~£29 (2 detectors)

Accreditation

UKAS-accredited lab

Best for

Homes, landlords, buyers

Visit UK Radon →

Radon UK

An independent UKAS-accredited provider offering postal radon testing for homes and workplaces. They also provide radon reports suitable for conveyancing and workplace compliance documentation. Competitive pricing, with results typically returned within 3–4 weeks of receipt.

Services

Home, workplace, conveyancing

Accreditation

UKAS-accredited

Best for

Workplace assessments

Airthings (digital monitors)

Airthings makes consumer-grade digital radon monitors such as the Corentium Home — useful for ongoing monitoring and seeing day-to-day variation. These are not a substitute for a 90-day accredited test when making remediation decisions, but are a useful complement for high-risk households who want continuous visibility of their radon levels.

Type

Digital continuous monitor

Cost

~£99

Best for

Ongoing monitoring post-mitigation

Finding a Radon Mitigation Contractor

Once you have a test result above the action level, you'll need a certified remediation contractor. The UKHSA and BRE maintain a free directory of approved contractors — these have been trained and assessed to install radon sumps and other mitigation systems to the required standard.

Always check:

• Contractor is listed on the BRE/UKHSA radon contractor register
• They provide a written quote and post-installation retest
• They carry public liability insurance
• They issue a completion certificate you can use for conveyancing

UKHSA/BRE Contractor Directory →

Radon Reports for Conveyancing

Buying or selling a property in a radon-affected area? You may need an address-level radon report rather than a postcode-level risk check. UK Radon provides paid address-level reports specifically designed for conveyancing. These are more detailed than a postcode lookup and are accepted by solicitors and mortgage lenders.

For context on what surveyors and solicitors look for, see our radon and property surveys guide and buying or selling a home with radon.

Frequently Asked Questions

Which radon testing company should I use in the UK? +

For home testing, UK Radon (ukradon.org) run by UKHSA is the most widely used and trusted option. Their 90-day postal test costs around £29 and includes UKAS-accredited lab analysis. For workplace compliance or formal conveyancing reports, UK Radon and Radon UK both provide accredited services.

Do I need a certified company to test my home? +

For a result you can act on — especially for remediation decisions, property transactions, or workplace compliance — yes. UKAS-accredited laboratory analysis is the standard required by UKHSA. Amazon consumer monitors give useful ongoing data but are not a substitute.

How long does a professional radon test take? +

The detectors need to be in place for a minimum of 90 days. After returning them to the lab, results typically take 3–4 weeks. Allow around 4–5 months from ordering to receiving a formal result. For urgent conveyancing, some providers offer expedited short-term tests — but these are less accurate and not recommended for remediation decisions.

How much does professional radon mitigation cost? +

A radon sump installation by a BRE/UKHSA-certified contractor typically costs £800–2,500 depending on floor type and property size. A positive pressure unit (PPU) is cheaper at around £300–600. See our full radon mitigation guide for details on each method.

Check Your Area First

Before ordering a test, check whether your postcode district is in a radon-affected area. This helps you decide how urgently to act.

Get a Radon Test for your home

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

UKRadon Postal Test Kit
From ~£29 · 3-month detector Airthings Corentium Home (Amazon UK)
~£99 · Digital · Ongoing monitoring

We may earn a small commission from these links at no extra cost to you.

Based on UKHSA and BRE guidance. Last reviewed April 2026.