Last updated: 16 January 2026
IRP
Independent Review of Progress - a review process for indeterminate sentence prisoners to assess their progress against sentence plan objectives and their suitability for progression through the prison system.
Related Terms
ISP
Indeterminate Sentence Prisoner - a prisoner serving a sentence with no fixed end date, including life sentences and the now-abolished IPP sentences. Release depends on demonstrating reduced risk and is decided by the Parole Board.
Parole
The supervised release of a prisoner before the end of their sentence, subject to conditions. Breach of parole conditions can result in recall to prison.