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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.
9 March 2026
An experienced and innovative leadership team and an improved staffing situation had led to improvements at this South East London, category C prison that held 577 young men at the time of this inspection. With improvements from poor to not sufficiently good in both our…
26 June 2023
we found leaders (see Glossary) relied too much on keeping prisoners apart to manage conflict and violence. As a consequence, prisoners could not access enough education or work. In addition, outcomes in rehabilitation and release planning were poor. 1.4 At this independent review of progress…
9 December 2022
Isis is a modern, category C prison in south-east London that held 595 young men at the time of our inspection. There was a high turnover of prisoners with an average of 80 arrivals each month, but in spite of this instability, the prison retained…
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