
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 mainland Europe. The UK comprises four nations: England, Scotland, Wales, and Northern Ireland. The United Kingdom contains most of the area and population of the British Isles—the geographic term for the group of islands that includes Great Britain, Ireland, and thousands of smaller islands. Great Britain is the official collective name for England, Scotland, and Wales and their associated islands. It does not include Northern Ireland and is therefore not interchangeable with the UK.
| Characteristics | Values |
|---|---|
| Full Name | The United Kingdom of Great Britain and Northern Ireland |
| Common Names | The United Kingdom (UK), Britain |
| Type of Country | Constitutional monarchy and a parliamentary democracy operating under the Westminster system |
| Sovereignty | Sovereign country |
| Location | Northwestern Europe |
| Bodies of Water | Atlantic Ocean, North Sea, English Channel, Celtic Sea, Irish Sea |
| Area | 94,354 square miles (244,376 sq km) |
| Population | 68.2 million (2023 estimate) |
| Capital | London |
| Major Cities | Birmingham, Liverpool, Manchester, Belfast, Londonderry, Edinburgh, Glasgow, Swansea, Cardiff |
| Constituent Countries | England, Scotland, Wales, Northern Ireland |
| Constituent Countries' Capitals | London (England), Edinburgh (Scotland), Cardiff (Wales) |
| Form of Government | Constitutional monarchy with two legislative houses (House of Commons, House of Lords) |
| Head of State | Monarch |
| Historical Notes | The Kingdom of England and the Kingdom of Scotland united under the Treaty of Union in 1707 to form the Kingdom of Great Britain; the Acts of Union 1800 incorporated the Kingdom of Ireland to create the United Kingdom of Great Britain and Ireland |
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What You'll Learn
- The United Kingdom is a constitutional monarchy and a parliamentary democracy
- The UK comprises England, Scotland, Wales, and Northern Ireland
- The UK maintains sovereignty over the British Overseas Territories
- The UK is an island country located off the northwestern coast of mainland Europe
- The UK is made up of four nations that are also countries in their own right

The United Kingdom is a constitutional monarchy and a parliamentary democracy
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a constitutional monarchy and a parliamentary democracy. It is a sovereign state, located in Northwestern Europe, off the coast of the continental mainland. The UK comprises four parts: England, Scotland, Wales, and Northern Ireland. Together, England, Scotland, and Wales constitute Great Britain, the larger of the two principal islands, while Northern Ireland and the Republic of Ireland form the island of Ireland.
The UK has a long history, with continuous habitation since the Neolithic period. The Roman conquest of Britain began in AD 43, followed by Anglo-Saxon settlement and the Norman conquest of England in 1066. The Kingdom of England and the Kingdom of Scotland united under the Treaty of Union in 1707, creating the Kingdom of Great Britain. The Acts of Union in 1800 further united Great Britain with Ireland, forming the United Kingdom of Great Britain and Ireland.
The UK is a constitutional monarchy, meaning the role of the monarch is largely ceremonial and restricted by constitutional conventions. The monarchy serves as a symbol of national unity and performs various official functions, such as appointing the Prime Minister and approving legislation. The UK's parliamentary democracy operates under the Westminster system, with the Parliament of the United Kingdom as the sovereign legislative body. Parliament consists of two houses: the elected House of Commons and the appointed House of Lords, with the Crown as the third component, personified by the monarch.
The UK's parliamentary system ensures that the government is accountable to Parliament, which represents the electorate. Parliament debates and passes laws, approves taxation, and scrutinizes the work of the government. The House of Commons, as the democratically elected chamber, holds the most power in the legislative process, with the House of Lords acting as a revising chamber. While the UK is a unitary state, it has devolved powers to Scotland, Wales, and Northern Ireland, allowing them a degree of self-governance.
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The UK comprises England, Scotland, Wales, and Northern Ireland
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 mainland Europe. The UK comprises England, Scotland, Wales, and Northern Ireland, which are also referred to as "countries" within the United Kingdom.
England, Scotland, and Wales together form Great Britain, the larger of the two principal islands in the British Isles, while Northern Ireland and the Republic of Ireland constitute the second-largest island, Ireland. England occupies most of southern Great Britain and includes the Isles of Scilly and the Isle of Wight off its coasts. Scotland is situated in the northern region of Great Britain and encompasses the Orkney, Shetland, and Hebrides islands. Wales, which includes the island of Anglesey, lies west of England.
The United Kingdom has a population of over 68.2 million people and includes most of the area and population of the British Isles. The British Isles are a geographic term referring to the group of islands that include Great Britain, Ireland, and thousands of smaller islands. The UK maintains sovereignty over the British Overseas Territories, which are located across various oceans and seas globally.
The United Kingdom is a constitutional monarchy and a parliamentary democracy, also known as a "democratic parliamentary monarchy". It is a centralised, unitary state with a sovereign parliament made up of the elected House of Commons, the appointed House of Lords, and the Crown, represented by the monarch.
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The UK maintains sovereignty over the British Overseas Territories
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe. It comprises England, Scotland, Wales, and Northern Ireland. The UK includes the island of Great Britain, the northeastern part of the island of Ireland, and most of the smaller islands within the British Isles.
The relationship between the UK and its overseas territories is complex, spanning constitutional, security, and financial aspects. The territories operate with differing levels of self-governance, balancing local decision-making with UK responsibilities. The UK government collaborates closely with the territories on security and defence, working together to counter external threats, international terrorism, and organised crime. The UK is responsible for providing military support and ensuring the security of its overseas territories, excluding Antarctica, as the UK is a signatory to the Antarctic Treaty 1959.
The UK also engages in financial cooperation, providing support for the economic development and financial stability of its overseas territories. The foreign affairs of the overseas territories are handled by the FCDO in London, and some territories maintain diplomatic officers in nearby countries for trade and immigration purposes.
The people of the British Overseas Territories are British nationals, although most territories distinguish between those with rights reserved under the local government and those with a qualifying connection to the territory. For example, in Bermuda, this is called "Bermudian status", which can be inherited or obtained subject to conditions laid down by the local government.
It is important to note that the British overseas territories are separate from the Crown Dependencies of Jersey, Guernsey, and the Isle of Man, which are also under the sovereignty of the British monarch but have a different constitutional relationship with the United Kingdom.
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The UK is an island country located off the northwestern coast of mainland Europe
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is an island country located off the northwestern coast of mainland Europe. It is made up of the island of Great Britain, the northeastern part of the island of Ireland, and numerous smaller islands within the British Isles, covering 94,354 square miles (244,376 square kilometres).
Great Britain is the official collective name for England, Scotland, and Wales, as well as their associated islands, such as the Isle of Wight, the Hebrides, and the Isles of Scilly. It does not include Northern Ireland, and thus, the terms "Great Britain" and "United Kingdom" should not be used interchangeably. The United Kingdom is a sovereign state, but England, Scotland, Wales, and Northern Ireland are also considered countries in their own right.
The United Kingdom has a long and complex history, dating back to the Neolithic period. The Roman conquest of Britain began in AD 43, followed by Anglo-Saxon settlement and the Norman conquest of England in 1066. The Kingdom of England and the Kingdom of Scotland united under the Treaty of Union in 1707, forming the Kingdom of Great Britain. The Acts of Union in 1800 further united Great Britain with the Kingdom of Ireland, creating the United Kingdom of Great Britain and Ireland.
Northern Ireland, which makes up the modern-day United Kingdom along with Great Britain, has an area of 5,470 square miles (14,160 square kilometres) and shares a land border with the Republic of Ireland. The rest of the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea, and the Irish Sea. The United Kingdom maintains sovereignty over the British Overseas Territories, which are scattered across the globe.
The United Kingdom is a constitutional monarchy and a parliamentary democracy, operating under the Westminster system. The country is governed by the Parliament of the United Kingdom, which consists of the elected House of Commons, the appointed House of Lords, and the Crown, represented by the monarch. London, one of the world's leading commercial, financial, and cultural centres, is the capital of both England and the United Kingdom as a whole.
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The UK is made up of four nations that are also countries in their own right
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 mainland Europe. The UK is made up of four nations that are also countries in their own right: England, Scotland, Wales, and Northern Ireland. These nations constitute the island of Great Britain and the northeastern part of the island of Ireland, as well as many smaller islands.
England, Scotland, and Wales together form Great Britain, the larger of the two principal islands in the British Isles. England occupies most of southern Great Britain and includes offshore islands like the Isles of Scilly and the Isle of Wight. Scotland, in northern Great Britain, includes the Orkney, Shetland, and Hebrides islands. Wales, west of England, includes the island of Anglesey.
Northern Ireland, separated from Great Britain by the Irish Sea and North Channel, is the northeastern part of the island of Ireland. It shares a land border with the Republic of Ireland and has a mostly hilly landscape, featuring lakes like Lough Neagh and Lough Erne and the Giant's Causeway, a World Heritage Site.
The United Kingdom has a long history, with continuous habitation since the Neolithic period. The Roman conquest of Britain began in AD 43, followed by Anglo-Saxon settlement and the Norman conquest of England in 1066. The Kingdom of England and the Kingdom of Scotland united under the Treaty of Union in 1707, creating the Kingdom of Great Britain. The Acts of Union in 1800 incorporated the Kingdom of Ireland, forming the United Kingdom of Great Britain and Ireland. In 1922, the majority of Ireland seceded, leaving six counties of Ulster (now Northern Ireland) within the United Kingdom.
The UK is a constitutional monarchy and a parliamentary democracy, with London as its capital. It maintains sovereignty over the British Overseas Territories and has a population of over 68.2 million people as of 2023.
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Frequently asked questions
The United Kingdom, or UK, is a country in Northwestern Europe, off the coast of mainland Europe. It is a political union comprising four nations: England, Scotland, Wales, and Northern Ireland.
Great Britain is a geographic term for the island that makes up the majority of the UK. It is also a political term for the union of England, Scotland, and Wales, including their outlying islands.
The United Kingdom includes Northern Ireland, whereas Great Britain does not. The UK is a political union of nations, whereas Great Britain is a geographic term for the island and a political term for the union of England, Scotland, and Wales.
The United Kingdom was formed through a series of treaties and acts of union. In 1707, the Kingdom of England and the Kingdom of Scotland united under the Treaty of Union to create the Kingdom of Great Britain. In 1801, the Acts of Union incorporated the Kingdom of Ireland, creating the United Kingdom of Great Britain and Ireland. In 1922, Ireland gained its independence, and the United Kingdom became the United Kingdom of Great Britain and Northern Ireland.


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