PREVIEW: Back To Jail - Crime And Punishment, Channel 4

This episode of Crime and Punishment follows the journeys of three of Hampshire's prolific repeat offenders, who are all trying to reform their lives after their release from prison.

They're supported by probation and police, doing the best they can, but at the time of filming, within a new and compromised probation system that leaves officers overwhelmed with large caseloads and fewer resources.

And when it's the job of probation to manage and assess the risk posed by offenders in the community, the consequences of mistakes can be disastrous. Johnathan has 44 convictions and he's a serious risk to the public.

As Police Offender Manager Steve says: 'Sober he's nice guy, but with alcohol in him, he's a bit of a monster - he's horrible. He can be violent. I've never seen a change in anyone really like him.' Daniel, from Dorset, has been homeless and struggling with addiction since he was 15. His list of offences includes illegal drug use, petty theft and violent behaviour.

Back To Jail airs Wednesday 30th June at 10pm on Channel 4.