Full Breakdown
Unsafe Radon Levels Detected in UK Prisons Prompt Legal Action
2/20/2026, 10:01:26 PM
Overview of the Situation
Unsafe levels of radon gas, a known carcinogen, have been detected in 16 prisons across the UK, leading to investigations by the Ministry of Justice (MoJ). HMP Dartmoor in Devon was closed in 2024 after radon levels reached up to ten times higher than the recommended limits. In response, hundreds of former staff and inmates have initiated legal action against the MoJ for compensation due to their exposure.
Affected Prisons and Radon Levels
The prisons identified with unsafe radon levels include HMP Bedford, Channings Wood, Downview, East Sutton Park, Exeter, Hollesley Bay, Leicester, Lincoln, Lindholme, Parc, Portland, Stafford, The Verne, Usk, and Wealstun. Additionally, a site within HMP Lindholme and 16 probation sites across various regions, including London and the South East, have also recorded elevated radon levels. According to the Health Security Agency, radon exposure is linked to over 1,100 lung cancer deaths annually in the UK.
Historical Context and Recent Findings
Documents released under freedom of information laws reveal that HMP Exeter recorded radon levels of 2,750 bq/m³ in winter 2020, significantly exceeding legal limits. A subsequent report in 2022 recommended suspending activities in affected areas. Recent measurements from late 2024 to early 2025 indicated radon levels exceeding 900 bq/m³ in some sections of the prison. A risk assessment conducted in May 2025 advised banning prisoners from areas with radon concentrations above 300 bq/m³.
Legal Actions and Health Concerns
Law firm Kesar & Co is leading the legal action for HMP Dartmoor, with around 20-25 current prisoners from HMP Exeter and a similar number from HMP Lindholme expressing concerns about their health due to radon exposure. Solicitor Inaam Barkatoolah highlighted the alarming results from both prisons, noting that many individuals are experiencing symptoms associated with radon poisoning, such as wheezing and fatigue.
Official Responses and Mitigation Efforts
Mick Pimblett, deputy general secretary of the Prison Officers Association (POA), stated that the union is collaborating with Her Majesty's Prison and Probation Service (HMPPS) to ensure that radon levels are monitored in affected facilities. He expressed satisfaction with the risk assessments and controls implemented in prisons exposed to excessive radon levels. A spokesperson for the prison service confirmed that they actively monitor the effectiveness of mitigation measures in place.
Conclusion and Next Steps
The situation regarding radon exposure in UK prisons remains critical, with ongoing investigations and legal actions highlighting the potential health risks faced by both staff and inmates. As the MoJ continues to address these concerns, the effectiveness of mitigation strategies will be closely scrutinized.
