| CHAT | Comprehensive Health Assessment Tool |
| CuSP | Custody Support Plan |
| DfE | Department for Education |
| DTO | Detention and Training Order |
| HMIP | Her Majesty’s Inspectorate of Prisons |
| HMPPS | Her Majesty’s Prison and Probation Service |
| IMB | Independent Monitoring Boards |
| JASP | Juvenile Awareness for Staff Programme |
| LADO | Local authority designated officer |
| LSCB | Local Safeguarding Children Board |
| MMPR | Minimising and Managing Physical Restraint |
| NHS | National Health Service |
| POELT | Prison Officer Entry Level Training |
| PPO | Prisons and Probation Ombudsman |
| PSI | Prison Service Instruction |
| PSO | Prison Service Order |
| REA | Rapid Evidence Assessment |
| SCH | Secure children’s home |
| STC | Secure training centre |
| YOI | Young offender institution |