United Kingdom, England and Wales
HM Prison and Probation Service
AI language analysis of seized prisoner phones, supplied by Not publicly specified
TrialOfficial publicationPAI-559354DA
- Body
- HM Prison and Probation Service
- Country
- United Kingdom
- Area
- England and Wales
- Technology
- AI language analysis of seized prisoner phones
- Supplier
- Not publicly specified
- Status
- Trial
Being tested in live conditions under a time-limited pilot or trial. - Stage
- In use now
- Since
- 2025
- Legal basis
- Ministry of Justice AI Action Plan for Justice; no dedicated statute identified
- Oversight
- None named
- Evidence
- Official publication
Police force, government department or public body publication - Source
- GOV.UK, Ministry of Justice
- Last checked
- Record code
PAI-559354DA
Notes
Digitally scans the contents of mobile phones seized from prisoners and applies AI language analysis to flag code words and messages indicating violence, escape plans or contraband smuggling for staff action. Trialled across the prison estate, having analysed over 8.6 million messages at the point of announcement in July 2025.
Announced alongside a separate AI violence predictor, described as analysing factors including a prisoner's age and previous involvement in violent incidents in custody to predict individual risk and assess threat levels on wings. That second tool is recorded here as announced rather than deployed: the announcement does not state it has been trialled, and no deployment evidence has been found.
Both rest on a single official source.
Other systems used by HM Prison and Probation Service
| Deployment | Country | Supplier | Since | Status | Checked |
|---|---|---|---|---|---|
| HM Prison and Probation ServiceOASys offender risk assessment | United KingdomEngland and Wales | UK Ministry of Justice; technical support from Capita | 2001 | Operational |