What Is Guernsey Prison? Inside Les Nicolles
Last reviewed: June 2026
Guernsey Prison — properly called Les Nicolles Prison — is the only prison in the Bailiwick of Guernsey. Because Guernsey is a Crown Dependency rather than part of the United Kingdom, the prison is run by the States of Guernsey, not by His Majesty’s Prison and Probation Service. That single fact explains many of the differences families notice when a relative is held there.
Where Les Nicolles is and who it holds
Les Nicolles sits in the north of Guernsey, near St Sampson. As the island’s only custodial establishment it has to do the job that several specialist prisons would share on the British mainland. The same secure site accommodates adult men and women, young offenders, and people held on remand awaiting trial as well as those already sentenced. This mixed role means the prison is carefully divided into separate wings and units so that different groups can be kept apart where the law and good practice require it.
Because Guernsey is small, the prison population is correspondingly small — usually well under 150 people — but numbers fluctuate noticeably with just a handful of new committals. In recent years the island has reported rises in inmate numbers, which puts pressure on a facility designed for modest occupancy.
How Guernsey Prison differs from a UK prison
The most important point for families is jurisdiction. Guernsey makes its own criminal laws and runs its own courts and prison service. Sentences are passed under Guernsey legislation, and release arrangements follow Guernsey rules rather than the England and Wales framework. Reforms such as the Sentencing Act 2026, which reshaped early release in England and Wales, do not automatically apply in the Bailiwick.
| Feature | Les Nicolles (Guernsey) | Typical England & Wales prison |
|---|---|---|
| Operator | States of Guernsey | HM Prison & Probation Service |
| Opened | 1989 | Varies widely |
| Who is held | Men, women, young offenders, remand & sentenced together on one site | Usually a single category or function |
| Approx. capacity | Around 134 | Hundreds to over a thousand |
| Law applied | Guernsey law | Law of England and Wales |
A single site under pressure
Running one prison for an entire jurisdiction creates real challenges. When numbers rise, there is no neighbouring establishment to relieve the pressure, and specialist needs — mental health, women’s provision, young offenders — all have to be met within the same walls. The prison has invested in security improvements, including measures to counter contraband delivered by drone, a problem affecting prisons across the British Isles. Healthcare, education and resettlement are provided through island services, with the small scale bringing both advantages, such as closer relationships with staff, and limits, such as fewer specialist courses than a large mainland prison might offer.
- “Guernsey is part of the UK, so the rules are the same.” Guernsey is a Crown Dependency with its own laws, courts and prison service.
- “There must be a separate women’s prison.” There is not — Les Nicolles holds all categories on one site, in separate units.
- “UK early-release reforms will apply automatically.” They do not; Guernsey sets its own sentencing and release rules.
- “You can just turn up to visit.” Visits must be booked in advance through the prison, and the rules are set locally.
Visiting and contacting someone at Les Nicolles
Visits, sending money and sending property are all arranged directly through Guernsey Prison rather than through the GOV.UK system used for English and Welsh prisons. Families should contact the prison for current visiting times, booking procedures and the rules on what can be sent in, as these are set locally and can change. The States of Guernsey website publishes contact details and prisoner-information guidance.
Frequently asked questions
Is Les Nicolles a men’s or women’s prison?
Both. As the island’s only prison, it holds men, women and young offenders in separate units on the same site.
How many people does Guernsey Prison hold?
Its certified normal capacity is around 134, though the actual population is usually lower and varies with new committals.
Does the England and Wales Sentencing Act 2026 apply in Guernsey?
No. Guernsey is a separate jurisdiction and sets its own sentencing and release law, although it may choose to introduce comparable reforms independently.
How do I send money or book a visit?
Contact Guernsey Prison directly. Unlike mainland prisons, arrangements are not handled through GOV.UK.
What happened to Guernsey’s old prison?
The Victorian-era gaol was replaced when Les Nicolles opened in 1989, providing more modern accommodation for the island.
Related reading and official sources
For official information see the States of Guernsey prison pages. You may also find our guides to other island and historic prisons useful, including Crumlin Road Gaol and Ghezel Hesar Prison.
