What Is the United Kingdom?

The United Kingdom, or UK, is a sovereign country in north-western Europe. Its full name is the United Kingdom of Great Britain and Northern Ireland, and it is made up of four nations: England, Scotland, Wales and Northern Ireland. Each has its own character, capital and traditions, while together they form a single country with one government in Westminster, one monarch and one postal system.

The names used for this part of the world are a common source of confusion, especially from abroad. United Kingdom, Great Britain, Britain and the British Isles all mean slightly different things, and they are not interchangeable. The table below sets them straight.

United Kingdom vs Great Britain vs British Isles

TermWhat it includesWhat it is
United Kingdom (UK)England, Scotland, Wales and Northern IrelandA sovereign country
Great Britain (GB)England, Scotland and WalesThe largest island, and those three nations
British IslesGreat Britain, the whole of Ireland and around 6,000 smaller islandsA geographical group of islands
EnglandEngland onlyOne of the UK's four nations

Great Britain leaves out Northern Ireland, so it is not the same as the UK. Britain is an informal short form usually taken to mean the United Kingdom. The British Isles is a geographical term, not a political one, and includes the Republic of Ireland, which is a separate independent country.

The Four Nations

Crown Dependencies and the Postcode Link

Three self-governing territories sit close to the UK but are not part of it. The Isle of Man and the Channel Islands of Jersey and Guernsey are Crown Dependencies. They run their own affairs, while the UK looks after their defence and foreign relations.

They still use British postcodes

Even though they are not in the UK, the Crown Dependencies belong to the British postcode system: the Isle of Man uses the IM area, Jersey uses JE and Guernsey uses GY. Gibraltar, a British Overseas Territory, has the single postcode GX11 1AA.

A Note on Names

Someone from the UK is British. They may also describe themselves as English, Scottish, Welsh or Northern Irish depending on their nation. Calling everyone from the UK English is a common mistake, since only people from England are English.

Sport adds to the confusion. England, Scotland, Wales and Northern Ireland usually compete as separate teams in football and rugby, but at the Olympic Games they join together as Great Britain, often shortened to Team GB.

Frequently Asked Questions

What is the difference between the United Kingdom and Great Britain?

The United Kingdom is a sovereign country made up of four nations: England, Scotland, Wales and Northern Ireland. Great Britain is the name of the largest island, and refers only to England, Scotland and Wales. In short, the UK includes Northern Ireland while Great Britain does not.

Is England the same as the United Kingdom?

No. England is just one of the four nations that make up the United Kingdom. People often use England and the UK to mean the same thing, but that leaves out Scotland, Wales and Northern Ireland.

What countries make up the United Kingdom?

The United Kingdom is made up of England, Scotland, Wales and Northern Ireland. Its full official name is the United Kingdom of Great Britain and Northern Ireland.

Is Great Britain a country?

Great Britain is not a country in its own right. It is a geographical island, and the term is also used for the three nations on that island: England, Scotland and Wales. The sovereign country is the United Kingdom.

Are Scotland, Wales and Northern Ireland countries?

Yes. England, Scotland, Wales and Northern Ireland are all described as countries, but they are not sovereign states. They are the four constituent nations of the single sovereign country, the United Kingdom.

Is Ireland part of the United Kingdom?

Northern Ireland is part of the United Kingdom. The Republic of Ireland is a separate, independent country and is not part of the UK, although both share the island of Ireland.

Are the Isle of Man and the Channel Islands part of the UK?

No. The Isle of Man, Jersey and Guernsey are Crown Dependencies. They are self-governing and are not part of the United Kingdom, although the UK is responsible for their defence. They do, however, sit within the British postcode system, using the IM, JE and GY areas.

What is the British Isles?

The British Isles is a geographical term for the group of islands that includes Great Britain, the whole of Ireland and around 6,000 smaller islands. It is a geographical description rather than a political one, and some people in Ireland prefer not to use it.