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A–D category: Not yet verified.
Official guide description: High security prison
Official guide · Checked 13 September 2026. This wording does not establish an A–D category.
Predominant function (2025/26): High Security
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.
2 February 2026
Located in March, Cambridgeshire, Whitemoor is a high-security prison for category A and B adult male prisoners. Nearly all were serving sentences exceeding ten years, with over three-quarters serving an indeterminate sentence. A significant number of individuals, some 80%, were assessed as presenting a very…
12 April 2023
HMP Whitemoor is a category A prison that is part of the long-term, high-secure estate. At the time of our inspection, it held 315 men of whom 40% were category A and eight were high-risk category A. When we last inspected the prison in 2017,…
8 September 2020
By contrast, the cleaning of communal areas required improvement. Around one in five prisoners was employed as a cleaner but these prisoners were given only 30 minutes to clean each morning. This created COVID-19-related risks and led to wings looking grubby in places. Systems for…
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