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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): Category B
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.
16 June 2025
Report on an independent review of progress at HMP Garth by HM Chief Inspector of Prisons 12-14 May 2025. Not enough progress had been made since the full inspection in 2024. More prisoners had tested positive for drugs, with a huge increase in drones conveying…
5 November 2024
This Lancashire category B training prison held 816 prisoners mostly serving long or indeterminate sentences. This was a disappointing inspection, with the prison having become noticeably less safe than at our last visit and some of the wings now feeling chaotic. The ingress of drugs…
6 March 2023
A part of the long-term high secure estate, HMP Garth is a category B training establishment located near Leyland in Lancashire. With a capacity for 845 adult men, at the time of our inspection some 790 were in residence, most of them assessed as presenting…
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