- General Information, HMP Millsike
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- Visits and Getting there, HMP Millsike
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Key Contact Details
| Name of Prison | HMP Millsike |
| Address: | Moor Lane Full Sutton York YO41 1FZ |
| Other contact details: | |
| Web Site: | www.mitie.com/all-sectors/immigration-and-justice/prisons/hmp-millsike |
| Email: | hmp.millsike@mitie.com |
| Main switchboard: | 01759 488888 |
| At Risk hotline: | 01759 488216 (Safer Custody, 09:00–15:00) |
| Fax: | |
| Visits booking number: | 01759 488887 |
| Visits booking email: | hmpmillsike-vbooking@forwardtrust.org.uk |
| Visits booking txt number: | |
| Type of Prison: | Male Cat C, Resettlement |
HMP Millsike opened in April 2025 near Full Sutton, North Yorkshire, and is run by Mitie Care & Custody under a 10-year operating contract – the first UK prison to be privately operated by Mitie. It is also the UK’s first all-electric prison, built without a gas connection. The current Director is Sarah Mallender, who took over in June 2026, and the prison has a design capacity of around 1,500 places across six house blocks, though it is still being built up towards that figure.