Interference describes unlawful or unauthorised meddling with a person’s rights, property or contractual or economic relations. It is a descriptive concept used across multiple areas of law in the UK and Ireland, with its precise meaning depending on context and, in some cases, specific statutory or case law definitions.In tort and delict, interference commonly refers to wrongful interference with goods (including conversion and trespass to goods), interference with land (trespass or nuisance), and interference with contractual or economic relations (such as inducing breach of contract or causing loss by unlawful means). In criminal law, interference can appear in defined offences (for example, interference with vehicles or witnesses).In public and human rights law, the term is used to describe state interference with protected rights (for example, interference with respect for private and family life under Article 8 ECHR), assessed for legality, necessity and proportionality.Usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland, though terminology (tort/delict) and specific statutory frameworks differ. Legal practitioners should identify the particular right affected and the relevant statutory or common law cause of action or offence.