HMP Isis
Isis is a men’s prison and young offender institution (YOI) in Thamesmead, South East London. It is named Isis after the ancient name for the River Thames.
- Category
- Category not recorded
- Holds
- Not recorded
- Operator
- HMPPS
- Region
- London, England
- Address
- HMP/YOI Isis Western Way Thamesmead SE28 0NZ
- Telephone
- 0203 356 4030
- GOV.UK page
- Visiting, sending money and contact details
Population over time
| Date | Held | Certified normal | Occupancy |
|---|---|---|---|
| 28 Aug 2026 | 614 | 478 | 128.5% |
| 24 Aug 2026 | 599 | 478 | 125.3% |
| 29 Jun 2026 | 587 | 478 | 122.8% |
Inspections, reports and announcements
- HMP/YOI Isis
HM Inspectorate of Prisons · 9 Mar 2026
- HMP/YOI Isis
HM Inspectorate of Prisons · 26 Jun 2023
- HMP/YOI Isis
HM Inspectorate of Prisons · 9 Dec 2022
Record last refreshed 27 Oct 2026. Source: GOV.UK and HM Inspectorate of Prisons, under the Open Government Licence v3.0.