- Criminal Justice Act 2003
- Criminal Justice and Courts Act 2015
- Legal Aid, Sentencing and Punishment of Offenders (LASPO) Act 2012
- Police and Criminal Evidence Act 1984
- Also see CPS Legal Guidance – Cautioning and Diversion | The Crown Prosecution Service
Of note, there are reforms planned to out of court disposals in the Police, Crime, Sentencing & Courts Bill.