Last updated: 16 January 2026
HM Inspectorate of Prisons (HMIP)
An independent inspectorate that reports on conditions for and treatment of those in prison, young offender institutions, secure training centres, immigration detention facilities, police and court custody suites, customs custody facilities and military detention. HMIP conducts announced and unannounced inspections and publishes reports with recommendations for improvement.
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HM Inspectorate of Prisons (HMIP)
Independent Monitoring Board (IMB)
Volunteers in every prison and immigration facility reporting on whether detainees are treated fairly and humanely.
Prisons and Probation Ombudsman (PPO)
Independent organisation investigating deaths in custody and complaints from people in custody or under community supervision.