Justice, in legal practice, refers to the fair and impartial application of law, procedure and remedies so that parties’ rights and obligations are properly determined and upheld. It encompasses both substantive justice (fairness of the legal rules and outcomes) and procedural justice (fairness of the processes, including access to the courts, the right to be heard and the right to a fair trial). Across England and Wales, Scotland, Northern Ireland and Ireland, “justice” is used descriptively rather than as a single, exhaustive statutory definition, though related concepts (such as “interests of justice” or “miscarriage of justice”) are defined or elaborated in specific legislation and case law. The term underpins core legal principles, including judicial independence, open justice, proportionality and equality before the law. It frequently appears in tests for granting relief or exercising discretion (for example, extensions of time, anonymity orders, or setting aside judgments) and in appeals alleging that a decision was unjust. Usage is broadly consistent across the UK and Ireland, though particular doctrines and remedies (such as judicial review grounds or criminal appeal standards) vary by jurisdiction.