This Checklist provides a step-by-step guide for defence practitioners preparing and delivering mitigation at sentencing and should be read in conjunction with Practice Note: Mitigation in the sentencing of criminal offences. It lists key mitigating factors considered by the courts, evidential requirements (including character evidence), and practical considerations when advancing mitigation. Mitigation Mitigation is an essential part of the sentencing process because it enables the court to impose a fair and proportionate punishment by considering the individual circumstances of both the offence and the offender. It can reduce culpability by taking into account various factors such as personal difficulties, remorse, or a minor role in the crime, ensuring that not all offenders are treated the same. Mitigation also supports rehabilitation by recognising efforts to change, such as cooperation with authorities or early guilty pleas, and helps differentiate between offenders—for example, a first-time offender versus a repeat offender. Overall, it ensures sentencing balances justice with fairness, context, and the aim of reducing re-offending. The Sentencing Council’s guidelines set out non-exhaustive lists of mitigation factors which