A hate crime is a criminal offence perceived to be motivated (wholly or partly) by hostility, bias or prejudice towards a protected characteristic of the victim, typically race, religion, sexual orientation, disability or transgender identity (and, in some contexts, gender). In England and Wales, “hate crime” is a practice term rather than a single statutory label. Relevant offences are prosecuted using specific racially or religiously aggravated offences (Crime and Disorder Act 1998) and hostility-based sentencing uplifts (Criminal Justice Act 2003). Scotland uses statutory aggravations for prejudice relating to disability, sexual orientation, transgender identity and variations in sex characteristics, and for racial and religious prejudice (including under the Hate Crime and Public Order (Scotland) Act 2021). Northern Ireland also relies on statutory aggravations for hostility based on race, religion, sexual orientation and disability. In Ireland, the Criminal Justice (Incitement to Violence or Hatred and Hate Offences) Act 2024 introduces specific hate offences and aggravations for certain protected characteristics. Across all four jurisdictions, hate crime affects charging decisions, evidential requirements (including “perception” tests), sentencing, recording practices and victim support, and is a significant focus of criminal justice policy and human rights compliance.