Next of kin is a non-technical term used in legal practice to describe the person or persons most closely related to an individual, typically for contact, notification or basic decision-making when that individual cannot act for themselves or has died. It is widely used on hospital forms, police records and in administrative processes, but is not, in itself, a definitive legal status in England and Wales, Scotland, Northern Ireland or Ireland.The expression is not generally defined in primary legislation or common law as determining succession or decision‑making rights. Intestacy, inheritance and legal decision-making are instead governed by specific statutory schemes (for example, intestacy rules or mental capacity legislation), which may produce a different order of priority from everyday understandings of “next of kin”.In practice, next of kin will usually mean a spouse, civil partner, cohabiting partner or closest blood relative (such as a parent, child or sibling). Identifying next of kin is relevant for notifying relatives of death or serious illness, arranging funerals, and locating potential beneficiaries or personal representatives, but does not displace formal legal rights or duties created by wills, grants of representation, powers of attorney or guardianship orders.