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A–D category: Not yet verified.
Predominant function (2025/26): Category C Trainer/Resettlement
Ministry of Justice performance classification. This describes the stated performance year, not a current A–D category or the categories of every prisoner.
Monthly snapshot: 24 August 2026
Operational capacity is the capacity reported for this prison in the same monthly bulletin.
Official monthly spreadsheet · Ministry of Justice publication
Prison site location
View on the prisons map
Location information checked 13 September 2026.
8 December 2025
Report on an independent review of progress at HMP Guys Marsh by HM Chief Inspector of Prisons (3-5 November 2025) The governor had worked hard to improve standards across the prison. Violence had reduced, the regime was more consistent and staff-prisoner relationships were better. Despite…
15 April 2025
Guys Marsh is a category C training and resettlement prison near Shaftesbury in Dorset. Built mainly in the 1970s and 1980s, the prison is a campus-style institution, currently with eight operational accommodation facilities. At the time of our inspection up to 487 adult men could…
12 October 2022
HMP Guys Marsh is a category C training prison located in rural Dorset. Mainly built in the 1960’s the campus-style prison has a mix of accommodation and held just under 460 men at the time of our visit. We have criticised Guys Marsh heavily in…
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