Sentencing is the stage in criminal proceedings where the court determines and imposes the penalty on a convicted offender. It involves selecting the appropriate type and length of sentence within statutory limits, having regard to the offence, harm, culpability, aggravating and mitigating factors, and relevant sentencing guidelines.In England and Wales, sentencing is structured by the Sentencing Code (Sentencing Act 2020) and Sentencing Council guidelines, with a range of disposals including custodial sentences, community orders, fines, discharges and ancillary orders. Northern Ireland operates under separate sentencing legislation and guidance but with similar concepts and disposals.In Scotland, sentencing is governed by distinct statutory provisions and case law, with guidance from the Scottish Sentencing Council. Courts may impose custodial sentences, community payback orders, fines and other orders. In Ireland, sentencing is largely case-law driven within legislative maximum penalties, with considerable judicial discretion guided by proportionality and rehabilitation principles.Across all four jurisdictions, sentencing is central to criminal justice practice, engaging issues of deterrence, public protection, rehabilitation, reparation and consistency, and is a frequent focus of appeal and judicial review.