What Was a Borstal Prison? The History of Britain’s Youth Detention System
Last reviewed: June 2026
A borstal was a type of custodial institution for young offenders that operated across the United Kingdom for most of the twentieth century. Borstals aimed to reform teenagers and young adults through discipline, work, education and training rather than simple punishment. The word still surfaces in everyday speech — “he was sent to borstal” — long after the system itself was abolished.
Origins of the borstal system
The borstal idea grew out of Edwardian concern that locking young offenders up alongside hardened adult criminals simply produced more criminals. The first institution opened in 1902 at Rochester in Kent, taking its name from the nearby village of Borstal. The Prevention of Crime Act 1908 put the system on a statutory footing, creating “borstal training” as a distinct sentence for young people. The aim was rehabilitation: separating the young from the old, instilling routine and a work ethic, and teaching a trade so that inmates left with a better chance of an honest life.
How borstals worked
Borstal regimes were built around structure. Days were filled with physical exercise, vocational instruction, schooling and supervised labour, often on farms or in workshops. Inmates progressed through grades, earning small privileges as they demonstrated good behaviour, with the prospect of earlier release as the reward. In their better incarnations, borstals genuinely changed lives, and some former inmates credited the training with giving them skills and self-respect they had lacked.
| Stage | Institution | Period |
|---|---|---|
| First borstal opens | Borstal, Rochester (Kent) | 1902 |
| Borstal training given statutory basis | Prevention of Crime Act 1908 | 1908 |
| Borstals abolished | Youth custody centres introduced | 1982 |
| Modern system | Young Offender Institutions | 1988 onwards |
Controversy and decline
By the post-war decades the reforming ideal had frayed. Overcrowding, staffing pressures and a drift towards tougher, more punitive regimes meant many borstals became grim and sometimes violent places, and a series of disturbances were widely reported. Critics argued that the institutions did little to cut reoffending and that the “training” label flattered regimes that were closer to harsh detention. Cultural depictions, from memoirs to films, fixed an image of brutality in the public mind.
- “Borstals still exist.” They were abolished in 1982. Young people in custody today go to Young Offender Institutions, Secure Training Centres or Secure Children’s Homes.
- “Borstal was a single prison.” “Borstal” was a type of institution — there were many across the country — named after the Kent village where the first one opened.
- “Borstal was just a softer prison.” It was a distinct training-based sentence with its own grades and ethos, though regimes varied enormously in practice.
Why were borstals abolished?
The Criminal Justice Act 1982 abolished borstal training and replaced it with youth custody centres, partly amid the era’s “short, sharp shock” approach to young offenders, which emphasised brisk discipline over lengthy training. Those centres were in turn reorganised, and the Criminal Justice Act 1988 established Young Offender Institutions, the model that — in modified form — continues today. The shift reflected a wider loss of faith in the borstal training concept and changing thinking about how best to deal with young people who offend.
The borstal legacy today
The borstal era left a lasting mark on how Britain thinks about youth justice. Modern provision still wrestles with the same questions the borstals raised: how to balance punishment with rehabilitation, how to keep young people safe in custody, and how to give them skills for life outside. For readers interested in how historic institutions are remembered, our guides to the Maze Prison and Newgate Prison explore other chapters of British penal history.
Frequently asked questions
What age were borstal inmates?
Generally between 16 and 21, though over the system’s history the upper age limit shifted, reaching as high as 23 in the 1930s.
When did borstals close?
The borstal system was abolished by the Criminal Justice Act 1982 and replaced by youth custody centres.
What replaced borstals?
Youth custody centres first, then Young Offender Institutions from 1988, alongside Secure Training Centres and Secure Children’s Homes for younger children.
Why is it called “borstal”?
After the village of Borstal near Rochester in Kent, the site of the first such institution in 1902.
Were borstals the same as approved schools?
No. Approved schools dealt with younger children deemed beyond parental control, while borstals took older teenagers and young adults convicted of offences.
Official and reference sources
For further reading see the National Justice Museum and the historical resources of the Prison Reform Trust.
