Question to the Ministry of Justice:

To ask His Majesty's Government for how long HMP Dartmoor has been empty of prisoners; what the estimated cost is of rectifying the buildings to make them safe and habitable; who the freeholder of the prison site is; and what obligations the freeholder has to fund the rectifying works.

HMP Dartmoor has been temporarily closed since August 2024 following the detection of radon gas. We have been working with specialist radon experts to investigate and assess options to allow us to reopen the prison safely.

The decision on reopening will be made based on the viability of the site, the effectiveness of works to reduce levels of radon, and value for money. We need to be satisfied that reopening the prison is justified in the light of a range of considerations, including compliance with legislative requirements, operational viability, and the cost of mitigation measures. To date, approximately £1.2 million has been spent on radon mitigation.

The freehold of the site on which HMP Dartmoor is built is owned by the Duchy of Cornwall. The Ministry of Justice has a full repairing and insuring lease. Any costs to maintain the buildings and make them safe and habitable therefore fall to the Department for the duration of its lease.