questionText: To ask the Secretary of State for Justice, how many (a) prison and (b) probation workers have made complaints through the new independent reporting channel in HMPPS.
answerText: HM Prison &amp; Probation Service (HMPPS’s) Independent Review, Resolution and Investigation Service (IRRIS), which supersedes the Tackling Unacceptable Behaviour Unit (TUBU), was launched on 26 January 2026. IRRIS continues to deliver all TUBU services: ...
heading: HM Prison and Probation Service: Complaints