Refers to the legal relationship arising where one party (the landlord) grants another (the tenant) a right to occupy or use land or premises, usually in return for rent, for a defined term. In practice, “landlord and tenant” encompasses residential tenancies, commercial leases, agricultural tenancies and shorter occupational arrangements, and is central to real estate, housing and property litigation work.The expression is descriptive rather than a single statutory term, but is used throughout landlord and tenant legislation and case law in England and Wales, Scotland, Northern Ireland and Ireland. Key legal features include: exclusive possession (distinguishing a tenancy/lease from a licence), duration (fixed-term or periodic), rent or other consideration, and covenants such as repair, insurance, user, alienation and forfeiture/irritancy provisions.The relationship determines rights and remedies on breach (e.g. possession proceedings, dilapidations, eviction, relief), statutory protections (such as security of tenure and rent control in some sectors), and regulatory requirements (e.g. deposit protection, registration, rent pressure zones). While terminology and statutes differ between the four jurisdictions, the core concept of a landlord–tenant relationship based on a lease or tenancy agreement is broadly consistent.