British Islands

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in northwestern Europe, off the coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland, with a population of over 69 million in 2024. The UK includes the island of Great Britain, the north-eastern part of the island of Ireland, and most of the smaller islands within the British Isles, covering 94,354 square miles (244,376 km2). It shares a land border with the Republic of Ireland and is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea, while maintaining sovereignty over the Crown Dependencies and the British Overseas Territories. The capital and largest city of England and the UK is London; Edinburgh, Cardiff and Belfast are the national capitals of Scotland, Wales and Northern Ireland.

historic nation and a self-governing British Crown dependency

Jersey ( ; ), officially the Bailiwick of Jersey, is an autonomous and self-governing British Crown Dependency in Northwestern Europe off the Cotentin Peninsula of north-west France. At , the main island, Jersey, is the largest of the Channel Islands. Although not a sovereign state, Jersey has its own legal, fiscal and governmental systems; on that basis, it is regarded as a small nation or island country. Jersey's territory also includes some surrounding uninhabited islands and rocks. As of 2021, the island had a population of 103,267.

self-governing possessions of the British Crown

Guernsey ( ; Guernésiais: Guernési) is the second-largest island in the Channel Islands, located west of the Cotentin Peninsula, Normandy. It is the largest island in the Bailiwick of Guernsey, which includes five other inhabited islands – Alderney, Herm, Jethou, Lihou and Sark – and many small islets and rocks. The bailiwick has a population of 63,950, the vast majority of whom live on Guernsey, and the island has a land area of .

legal term in the UK referring to the United Kingdom (UKGBNI), the Bailiwicks of Jersey and Guernsey, and the Isle of Man