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| UNTOLD | Channel 4 DocumentarieStrong language, adult themes and scenes of violence that some viewers may find distressing.

Ex-prisoner David Navarro uncovers allegations of prison officer corruption, sex and drugs, with shocking videos filmed by current prisoners and exclusive interviews with former officers and prisoners.

First shown: 25 June 2025

00:00 Intro, David Navarro
02:09 Prison service understaffed
03:31 Food, drugs, prison officer corruption
09:35 Ex-officer speaks out
14:00 Inappropriate relationships with officers
21:18 Female ex-offender
25:58 The UK prison laws

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