The UK government has launched an investigation into 42 prison and probation facilities across the country amid growing concerns over elevated levels of radon gas, a radioactive substance linked to an increased risk of lung cancer. This probe follows the closure of HMP Dartmoor in 2024, where radon concentrations were found to be ten times the recommended safety limit. Despite the shutdown, the Ministry of Justice continues to incur an annual lease cost of £4 million for the site.
Widespread Radon Contamination in Prison System
At least 16 prisons, including HMP Exeter and HMP Lindholme, have previously recorded radon levels classified as "above action" thresholds, indicating significant health hazards. In some areas of HMP Exeter, measurements exceeded nine times the legal limit, raising alarms about prolonged exposure for inmates and staff. The Ministry of Justice asserts that it conducts routine monitoring and implements mitigation strategies for high radon levels, but critics argue that these efforts lack urgency and transparency.
Legal Action and Calls for Accountability
Legal firm Kesar & Co is pursuing litigation on behalf of former prisoners and employees who allege harmful radon exposure at six different prisons. Legal experts and advocacy groups have condemned the Ministry of Justice for what they describe as a sluggish and opaque response to the crisis, warning that hundreds more individuals could be at risk. The situation underscores broader issues in prison safety and regulatory oversight, with calls for more robust measures to protect vulnerable populations from environmental health threats.



