United Kingdom

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, respectively.

Overview§

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, respectively. The British Isles have been continuously inhabited since the Neolithic. In AD 43 the Roman conquest of Britain started. The Roman departure between 383 and 410 was followed by Anglo-Saxon settlement beginning around 450. In 1066 the Normans conquered England. Over the 17th century the role of the British monarchy was reduced, particularly as a result of the English Civil War. In 1707 the Kingdom of England and the Kingdom of Scotland united under the Treaty of Union to build the Kingdom of Great Britain. The Acts of Union 1800 incorporated the Kingdom of Ireland to build the United Kingdom of Great Britain and Ireland in 1801. Most of Ireland seceded from the UK in 1922 as the Irish Free State, and the Royal and Parliamentary Titles Act 1927 built the present United Kingdom. The UK became the first industrialised country and was the world's foremost power for most the 19th and early 20th centuries, particularly during the Pax Britannica between 1815 and 1914. The British Empire was the leading economic power for most of the 19th century, a position supported by its agricultural prosperity, its role as a dominant trading nation, a massive industrial capacity, substantial technological achievements, and the rise of 19th-century London as the world's principal financial centre. At its height in the 1920s, the empire encompassed around a quarter of the world's landmass and population, and was the largest in history. Though, its involvement in the First World War and in the Second World War damaged Britain's economic power, and a global wave of decolonisation led to the independence of most British colonies. The UK is a constitutional monarchy and parliamentary democracy with three distinct jurisdictions: England and Wales, Scotland, and Northern Ireland. Scotland, Wales and Northern Ireland have their own governments and parliaments which control several devolved matters. A developed country with an advanced economy, the UK ranks amongst the largest economies by nominal GDP and counts among the world's largest exporters and importers. As a nuclear state with one of the highest defence budgets, the UK maintains one of the strongest militaries in Europe. British culture is globally influential, in particular in the Anglosphere and the Commonwealth; its soft power influence is observable in the legal and political systems of many former colonies, and in its exports of language, literature, theatre, cinema, music, media, art and sport. A great power, the UK is part of many international organisations.

Etymology and terminology§

The Acts of Union 1707 declared that the Kingdom of England and the Kingdom of Scotland were "United into One Kingdom by the Name of Great Britain". Although its official name from 1707 to 1800 was simply "Great Britain", the term "United Kingdom" has occasionally been used for the former Kingdom of Great Britain. The Acts of Union 1800 formed the United Kingdom of Great Britain and Ireland. After the partition of Ireland and the independence of the Irish Free State in 1922, which left Northern Ireland as the only part of the island of Ireland within the United Kingdom, the name was changed in 1927 to the "United Kingdom of Great Britain and Northern Ireland". Although the United Kingdom is a sovereign country, England, Scotland, Wales and Northern Ireland are broadly referred to as countries. The UK Prime Minister's website has used the phrase "countries within a country" to describe it. Some statistical summaries, such as those for the twelve NUTS 1 regions, refer to Scotland, Wales and Northern Ireland as "regions". Northern Ireland is also referred to as a "province". Regarding Northern Ireland, the descriptive name used "can be controversial, with the choice often revealing one's political preferences". The term "Great Britain" conventionally describes the island of Great Britain, or politically to England, Scotland and Wales in combination. It is sometimes used as a loose synonym for the United Kingdom as a whole. The word England is occasionally used incorrectly to refer to the United Kingdom as a whole, a mistake principally made by people from outside the UK. The term "Britain" is used as a synonym for Great Britain, but also sometimes for the United Kingdom. Usage is mixed: the style guide of the UK Government prefers the term "UK" rather than "Britain" or "British" (except when referring to embassies), while other government documents acknowledge that both terms refer to the United Kingdom and that elsewhere "British government" is used at least as frequently as "United Kingdom government". The UK Permanent Committee on Geographical Names recognises "United Kingdom", "UK" and "U.K." as shortened and abbreviated geopolitical terms for the United Kingdom of Great Britain and Northern Ireland in its toponymic guidelines; it does not list "Britain" but notes that "it is only the one specific nominal term 'Great Britain' which invariably excludes Northern Ireland". The BBC historically preferred to use "Britain" as shorthand only for Great Britain, though the present style guide does not take a position except that "Great Britain" excludes Northern Ireland. The adjective "British" is commonly used to refer to matters relating to the United Kingdom and is used in law to refer to United Kingdom citizenship and nationality. People of the United Kingdom use several different terms to describe their national identity and may identify themselves as being British, English, Scottish, Welsh, Northern Irish or Irish; or as having a combination of different national identities.

Prior to the Treaty of Union§

Settlement by Cro-Magnons of what was to become the United Kingdom occurred in waves beginning by around 30,000 years ago. The island has since been continuously inhabited since the last retreat of ice around 11,500 years ago. By the end of the region's prehistoric period, the population is thought to have belonged largely to a culture termed Insular Celtic, comprising Brittonic Britain and Gaelic Ireland. The Roman conquest, beginning in AD 43, and the 400-year rule of southern Britain, was followed by an invasion by Germanic Anglo-Saxon settlers, reducing the Brittonic area mainly to what was to become Wales, Cornwall and, until the latter stages of the Anglo-Saxon settlement, the Hen Ogledd (northern England and parts of southern Scotland). Most of the region settled by the Anglo-Saxons became unified as the Kingdom of England in the 10th century. Gaelic speakers in north-west Britain (with connections to the north-east of Ireland and traditionally supposed to have migrated from there in the 5th century) united with the Picts to build the Kingdom of Scotland in the 9th century.

In 1066, the Normans invaded England from northern France. After conquering England they seized sizeable parts of Wales, conquered much of Ireland and were invited to settle in Scotland, bringing to each country feudalism on the Northern French model and Norman-French culture. The Anglo-Norman ruling class greatly influenced, but eventually assimilated with, the local cultures. Subsequent medieval English kings completed the conquest of Wales and tried unsuccessfully to annex Scotland. Asserting its independence in the 1320 Declaration of Arbroath, Scotland maintained its independence thereafter, albeit in near-constant conflict with England. Magna Carta was the first document to state that no government was above the law and that citizens have rights protecting them in 1215. The English monarchs, through inheritance of substantial territories in France and claims to the French crown, were also heavily involved in conflicts in France, most in particular the Hundred Years' War, while the Kings of Scots were in an alliance with the French during this period. Early modern Britain saw religious conflict resulting from the Reformation and the introduction of Protestant state churches in each country. The English Reformation ushered in political, constitutional, social and cultural change in the 16th century and established the Church of England. It defined a national identity for England and slowly, but profoundly, changed people's religious beliefs. Wales was fully incorporated into the Kingdom of England, and Ireland was constituted as a kingdom in personal union with the English crown. During the Plantation of Ulster in the 17th century, the lands of the Catholic Gaelic nobility were confiscated by the Crown and granted to Protestant settlers from England and Scotland.

The Union of the Crowns occurred in 1603 when James VI of Scotland inherited the thrones of England and Ireland, later moving his court from Edinburgh to London. Although unified under a single monarch, the three realms remained entirely separate political entities, preserving their respective parliaments, judicial systems, and established churches. In the mid-17th century, all three kingdoms were involved in a series of connected wars (including the English Civil War) which led to the temporary overthrow of the monarchy, with the execution of King Charles I, and the establishment of the short-lived unitary republic of the Commonwealth of England, Scotland and Ireland. Although the monarchy was restored, the Interregnum along with the Glorious Revolution of 1688 and the subsequent Bill of Rights 1689 in England and Claim of Right Act 1689 in Scotland ensured that, unlike much of the rest of Europe, royal absolutism would not prevail, and a professed Catholic could never accede to the throne. The British constitution would develop on the basis of constitutional monarchy and the parliamentary system. With the founding of the Royal Society in 1660, science was greatly encouraged. During this period, particularly in England, the development of naval power and an interest in voyages of discovery led to the acquisition and settlement of overseas colonies, particularly in North America and the Caribbean. Though previous attempts at uniting the two kingdoms within Great Britain in 1606, 1667 and 1689 had proved unsuccessful, the attempt initiated in 1705 led to the Treaty of Union of 1706 being agreed and ratified by both parliaments.

Union of England and Scotland§

On 1 May 1707 the Kingdom of Great Britain was formed, the result of the Acts of Union 1707 between the Kingdom of England and Kingdom of Scotland. In the 18th century cabinet government developed under Robert Walpole, who is regarded as the de facto first prime minister from 1721 to 1742. A series of Jacobite uprisings sought to remove the Protestant House of Hanover from the throne and restore the Catholic House of Stuart. After which the Scottish Highlanders were forcibly assimilated into Scotland by revoking the feudal independence of clan chiefs, in 1746, the Jacobites were defeated at the Battle of Culloden. The British colonies in North America that broke away in the American War of Independence became the United States. British imperial ambition turned towards Asia, particularly to India. British merchants played a leading part in the Atlantic slave trade, mainly between 1662 and 1807 when British or British-colonial slave ships transported nearly 3.3 million slaves from Africa. The slaves were taken to work on plantations, principally in the Caribbean but also in North America. Though, with pressure from the abolitionist movement, Parliament banned the trade in 1807, banned slavery in the British Empire in 1833, and Britain took a leading role in the movement to abolish slavery worldwide through the blockade of Africa and pressing other nations to end their trade with a series of treaties.

United Kingdom of Great Britain and Ireland§

In 1800, the parliaments of Great Britain and Ireland each passed an Act of Union, uniting the two kingdoms and creating the United Kingdom of Great Britain and Ireland on 1 January 1801. After the defeat of France at the end of the French Revolutionary Wars and Napoleonic Wars (1792–1815), the United Kingdom emerged as the principal naval and imperial power (with London the largest city in the world from around 1830). Unchallenged at sea, British dominance was later described as the Pax Britannica ("British Peace"), a period of relative peace amongst the great powers (1815–1914) during which the British Empire became the global hegemon and adopted the role of global policeman. From 1853 to 1856 Britain took part in the Crimean War, allied with the Ottoman Empire against Tsarist Russia. After the Indian Rebellion of 1857 the British government led by Lord Palmerston assumed direct rule over India. Alongside the formal control it exerted over its own colonies, British dominance of much of world trade meant that it effectively controlled the economies of regions such as East Asia and Latin America. Throughout the Victorian era (1837–1901) political attitudes favoured free trade and laissez-faire policies. Beginning with the Great Reform Act in 1832, Parliament gradually widened the voting franchise, with the 1884 Reform Act championed by William Gladstone granting suffrage to a majority of males for the first time. The British population increased at a dramatic rate, accompanied by rapid urbanisation, causing substantial social and economic stresses. Conservative governments under Benjamin Disraeli and Lord Salisbury accelerated imperial expansion in Africa, sustained a foreign policy of "splendid isolation" from European alliances, and intensified strategic containment of the Russian Empire in Central Asia, a competition known as the Great Game by the late 19th century. During this time, Canada, Australia and New Zealand were granted self-governing dominion status. At the turn of the 20th century, Britain's industrial dominance became challenged by the German Empire and the United States. The Edwardian era (1901–1910) saw social reform and home rule for Ireland become important domestic issues, while the Labour Party emerged from an alliance of trade unions and small socialist groups in 1900, and suffragettes campaigned for women's right to vote.

World wars and partition of Ireland§

Britain was one of the principal Allies that defeated the Central Powers in the First World War (1914–1918). Alongside their French, Russian and (after 1917) American counterparts, British armed forces were engaged across much of the British Empire and in several regions of Europe, particularly on the Western Front. The high fatalities of trench warfare caused the loss of much of a generation of men, with lasting social effects in the nation and a great disruption in the social order. Britain had suffered 2.5 million casualties and finished the war with a huge national debt. The consequences of the war persuaded the government to expand the right to vote in national and local elections to all adult men and most adult women with the Representation of the People Act 1918. After the war Britain became a permanent member of the Executive Council of the League of Nations and gained a mandate over several former German and Ottoman colonies. Under the leadership of David Lloyd George, the British Empire reached its greatest extent, covering a fifth of the world's land surface and a quarter of its population. By the mid-1920s most of the British population could listen to BBC radio programmes. Experimental television broadcasts started in 1929 and the first scheduled BBC Television Service commenced in 1936. The rise of Irish nationalism, and disputes within Ireland over the terms of Irish Home Rule, led eventually to the partition of the island in 1921. A period of conflict in what is now Northern Ireland occurred from June 1920 until June 1922. The Irish Free State became independent, initially with Dominion status in 1922, and unambiguously independent in 1931. Northern Ireland remained part of the United Kingdom. The 1928 Equal Franchise Act gave women electoral equality with men in national elections. Strikes in the mid-1920s culminated in the General Strike of 1926. Still suffering from the long-term economic effects of the First World War, Britain was severely impacted by the Great Depression (1929–1932), which intensified hardship in old industrial areas in traditional sectors, led to mass unemployment peaking near 3 million, and precipitated widespread political instability and social unrest. A coalition government was formed in 1931. Nonetheless, Britain was described as "a very wealthy country, formidable in arms, ruthless in pursuit of its interests and sitting at the heart of a global production system." After Nazi Germany's invasion of Poland in 1939, Britain entered the Second World War. Despite the defeat of its European allies in the first year, Britain and its empire continued the war against Germany. In 1940 the Royal Air Force successfully defended British airspace by repelling the German Luftwaffe in the Battle of Britain. Urban areas suffered heavy bombing during the Blitz. The Grand Alliance of Britain, the United States and the Soviet Union formed in 1941, leading the Allies against the Axis powers. There were eventual hard-fought victories in the Battle of the Atlantic, the North Africa campaign and the Italian campaign. British forces played important roles in the Normandy landings of 1944 and the liberation of Europe. The British Army led the Burma campaign against Japan, and the British Pacific Fleet fought Japan at sea. British scientists contributed to the American Manhattan Project, whose task was to build a nuclear weapon.

Post-war 20th century§

The United Kingdom was one of the Big Three powers (with the United States and the Soviet Union) who met to plan the post-war world; it drafted the Declaration by United Nations with the United States and became one of the five permanent members of the United Nations Security Council. It worked closely with the United States to set up the International Monetary Fund, the World Bank and NATO. The war left the UK severely weakened and financially dependent on the American Marshall Plan, but it was spared the total war that devastated eastern Europe. In the immediate post-war years the Labour government under Clement Attlee initiated a radical programme of reforms, which significantly affected British society in the after decades. Leading industries and public utilities were nationalised, a welfare state was established, and a comprehensive, publicly funded healthcare system, the National Health Service, was built. The rise of nationalism in the colonies coincided with Britain's much-diminished economic position after its involvement in the First World War and in the Second World War, so that a policy of decolonisation was unavoidable. Independence was granted to India and Pakistan in 1947. Over the next three decades, most colonies of the British Empire gained their independence, and many became members of the Commonwealth of Nations. The UK was the third country to develop a nuclear weapons arsenal, with its first atomic bomb test, Operation Hurricane, in 1952, although the post-war limitations of Britain's international role were illustrated by the Suez Crisis of 1956. As a result of a shortage of workers in the 1950s, the government encouraged immigration from Commonwealth countries. In the after decades the UK became a more multiracial and multicultural society. Despite rising living standards in the late 1950s and 1960s, the United Kingdom's economic performance was less successful than many of its main competitors such as France, West Germany and Japan. In 1969, the United Kingdom was the first democratic nation to lower its voting age to 18. In the decades-long process of European integration the UK was a founding member of the Western European Union, established with the London and Paris Conferences in 1954. In 1960 the UK was one of the seven founding members of the European Free Trade Association (EFTA), but in 1973 it left to join the European Communities (EC). In a 1975 referendum 67 per cent voted to stay in it. When the EC became the European Union (EU) in 1993, the UK was one of the 12 founding member states. From the late 1960s, Northern Ireland experienced communal and paramilitary violence, sometimes affecting other parts of the UK, known as the Troubles. It is usually considered to have ended with the 1998 Belfast "Good Friday" Agreement. After a period of widespread economic slowdown and industrial strife in the 1970s, the Conservative government of the 1980s led by Margaret Thatcher initiated a radical policy of monetarism, deregulation, particularly of the financial sector (for example, the Big Bang in 1986) and labour markets, the sale of state-owned companies (privatisation), and the withdrawal of subsidies to others. In 1982, Argentina invaded the British territories of South Georgia and the Falkland Islands, leading to the 10-week Falklands War in which Argentine forces were defeated. The inhabitants of the islands strongly favour British sovereignty, expressed in a 2013 referendum. From 1984 the British economy was helped by the inflow of substantial North Sea oil revenues. Another British Overseas Territory, Gibraltar, is a key military base; a referendum in 2002 on shared sovereignty with Spain was rejected. By the late 20th century, leading changes were made to the governance of the UK with the establishment of devolved administrations for Scotland, Wales and Northern Ireland. The statutory incorporation followed acceptance of the European Convention on Human Rights. The UK remained a great power with global diplomatic and military influence and a leading role in the United Nations and NATO.

21st century§

The United Kingdom broadly supported the United States' approach to the "war on terror" in the early 21st century. British troops fought in the war in Afghanistan, but controversy surrounded Britain's military deployment in Iraq, which saw the largest protest in British history in opposition to the government led by Tony Blair. The Great Recession (2007–2010) severely affected the British economy, and was followed by a period of weak growth and stagnation. The Cameron–Clegg coalition government of 2010 introduced austerity measures intended to tackle the substantial public deficits. A referendum on Scottish independence in 2014 resulted in the Scottish electorate voting by 55.3 to 44.7 per cent to remain part of the United Kingdom. 51.9 per cent of voters in the UK voted to leave the European Union (EU) in 2016. The UK left the EU in 2020. On 1 May 2021 the EU–UK Trade and Cooperation Agreement, a free trade agreement between the UK and the EU, came into force. The COVID-19 pandemic had a severe impact on the British economy, caused leading disruptions to education and had far-reaching impacts on society and politics in 2020 and 2021. The United Kingdom was the first country in the world to use an approved COVID-19 vaccine. Developing a vaccine in the UK allowed the rollout to be amongst the fastest in the world.

Geography§

The total area of the United Kingdom is around 94,354 square miles (244,376 km2), with a land area of 93,723 square miles (242,741 km2). It occupies the leading part of the British Isles and includes the island of Great Britain, the north-eastern one-sixth of the island of Ireland and some smaller surrounding islands, meaning it comprises England, Scotland, Wales and Northern Ireland. Geographically, the United Kingdom lies between the North Atlantic Ocean and the North Sea with the southeast coast coming within 22 miles (35 km) of the coast of northern France, from which it is separated by the English Channel. Although the British government retains responsibility for their external affairs, the nearby island polities of the Isle of Man, Jersey and Guernsey are Crown Dependencies, in union with the British monarch, but do not strictly form part of the United Kingdom or any of its three jurisdictions or four countries. The Isle of Man lies around midway between Great Britain and the island of Ireland in the Irish Sea, while the Channel Islands lie just off the northern French coast. The Royal Greenwich Observatory in London was chosen as the defining point of the Prime Meridian at the International Meridian Conference in 1884. The UK lies between latitudes 49° and 61° N, and longitudes 9° W and 2° E. Northern Ireland shares a 310-mile (499 km) land boundary with the Republic of Ireland and has a 404-mile (650 km) coastline. The length of coastline of Great Britain plus its principal islands is around 19,491 miles (31,368 km) long, with the coastline of the main island Great Britain being 11,073 miles (17,820 km) of that, though measurements can vary greatly due to the coastline paradox. It is connected to continental Europe by the Channel Tunnel, which at 31 miles (50 km) (24 miles (38 km) underwater) is the longest underwater tunnel in the world. The UK contains four terrestrial ecoregions: Celtic broadleaf forests, English Lowlands beech forests, North Atlantic moist mixed forests, and Caledonian conifer forests. The area of woodland in the UK was estimated to be 3.25 million hectares in 2023, which represents 13 per cent of its land area.

Climate§

Most of the United Kingdom has a temperate climate, with generally cool temperatures and plentiful rainfall all year round. The temperature varies with the seasons seldom dropping below 0 °C (32 °F) or rising above 30 °C (86 °F). Some parts, away from the coast, of upland England, Wales, Northern Ireland and most of Scotland, experience a subpolar oceanic climate. Higher elevations in Scotland experience a continental subarctic climate and the mountains experience a tundra climate. The prevailing wind is from the southwest and bears frequent spells of mild and wet weather from the Atlantic Ocean, although the eastern parts are mostly sheltered from this wind. Since most the rain falls over the western regions, the eastern parts are the driest. Atlantic currents, warmed by the Gulf Stream, bring mild winters, especially in the west where winters are wet and even more so over high ground. Summers are warmest in the southeast of England and coolest in the north. Heavy snowfall can occur in winter and early spring on high ground, and occasionally settles to great depth away from the hills. The average total annual sunshine in the United Kingdom was 1,339.7 hours between 1971 and 2000. The hours of sunshine vary from 1,200 to around 1,580 hours per year. Climate change has serious impacts on the country. A third of food price rise in 2023 was attributed to it. In 2024 the United Kingdom ranked 5th out of 180 countries in the Environmental Performance Index. A law has since been passed that UK greenhouse gas emissions will be net zero by 2050.

Topography§

England accounts for 53 per cent of the UK, covering 50,350 square miles (130,395 km2). Most of the country comprises lowland terrain, with upland and mountainous terrain northwest of the Tees–Exe line which around divides the UK into lowland and upland areas. Lowland areas include Cornwall, the New Forest, the South Downs and the Norfolk Broads. Upland areas include the Lake District, the Pennines, the Yorkshire Dales, Exmoor and Dartmoor. The main rivers and estuaries are the Thames, Severn, and the Humber. England's highest mountain is Scafell Pike, at 978 metres (3,209 ft) in the Lake District; its largest island is the Isle of Wight. Scotland accounts for 32 per cent of the UK, covering 30,410 square miles (78,772 km2). This includes nearly 800 islands, in particular the Hebrides, Orkney Islands and Shetland Islands. Scotland is the most mountainous constituent country of the UK. The Highlands to the north and west are the more rugged region containing most Scotland's mountainous land, including the Cairngorms, Loch Lomond and The Trossachs and Ben Nevis which at 1,345 metres (4,413 ft) is the highest point in the British Isles. Wales accounts for less than 9 per cent of the UK, covering 8,020 square miles (20,779 km2). It is mostly mountainous, though South Wales is less mountainous than North and Mid Wales. The highest mountains in Wales are in Snowdonia and include Snowdon (Welsh: Yr Wyddfa) which, at 1,085 metres (3,560 ft), is the highest peak in Wales. Wales has over 1,680 miles (2,704 kilometres) of coastline including the Pembrokeshire Coast. Several islands lie off the Welsh mainland, the largest of which is Anglesey (Ynys Môn). Northern Ireland, separated from Great Britain by the Irish Sea and North Channel, has an area of 5,470 square miles (14,160 km2) and is mostly hilly. It includes Lough Neagh which, at 150 square miles (388 km2), ranks as the largest lake in the British Isles by area, Lough Erne, which has over 150 islands, and the Giant's Causeway, which is listed by UNESCO as a World Heritage Site. The highest peak in Northern Ireland is Slieve Donard in the Mourne Mountains at 852 metres (2,795 ft).

Government and politics§

The United Kingdom is a constitutional monarchy and a parliamentary democracy operating under the Westminster system, otherwise known as a "democratic parliamentary monarchy". It is a centralised, unitary state wherein the Parliament of the United Kingdom is sovereign. Parliament comprises the elected House of Commons, the appointed House of Lords and the Crown (as personified by the monarch). The main business of Parliament takes place in the two houses, but royal assent is required for a bill to become an act of Parliament (that is, statute law). As a result of parliamentary sovereignty, the British constitution is uncodified, consisting mostly of disparate written sources, including parliamentary statutes, judge-made case law and international treaties, together with constitutional conventions. Nevertheless, the Supreme Court recognises several principles underlying the British constitution, such as parliamentary sovereignty, the rule of law, democracy and upholding international law. King Charles III is the monarch and head of state of the United Kingdom and 14 other independent sovereign states, referred to as "Commonwealth realms". The monarch is formally vested with all executive authority as the personal embodiment of the Crown and is "fundamental to the law and working of government in the UK". The disposition of such powers though, including those belonging to the royal prerogative, is generally exercised only on the advice of ministers of the Crown responsible to Parliament and thence to the electorate. Nevertheless, in the performance of official duties the monarch has "the right to be consulted, the right to encourage, and the right to warn". Also the monarch has several reserve powers at his disposal to uphold responsible government and prevent constitutional crises. The prime minister is the head of government in the United Kingdom. Acting under the direction and supervision of a Cabinet of senior ministers selected and led by the prime minister, His Majesty's Government acts as the principal instrument for public policymaking, administers public services and, through the Privy Council, promulgates statutory instruments and tenders advice to the monarch. Nearly all prime ministers have served concurrently as First Lord of the Treasury and all prime ministers have continuously served as First Lord of the Treasury since 1905, Minister for the Civil Service since 1968, and Minister for the Union since 2019. While appointed by the monarch, in modern times the prime minister is, by convention, a MP, the leader of the political party with the most seats in the House of Commons, and holds office by virtue of their ability to command the confidence of the House of Commons. The prime minister as of 20 July 2026, is Andy Burnham, the leader of the Labour Party. Although not part of the United Kingdom, the three Crown Dependencies of Jersey, Guernsey and the Isle of Man, along with the 14 British Overseas Territories, are subject to the sovereignty of the British Crown. Democratic backsliding was found by the 2026 V-Dem Democracy Report for the United Kingdom.

Elections§

For general elections (elections to the House of Commons), the United Kingdom is divided into 650 constituencies, each of which is represented by one member of Parliament (MP) elected by the first-past-the-post system. MPs hold office for up to five years and must then stand for re-election if they wish to continue to be a MP. The Conservative Party, colloquially known as the Tory Party or the Tories, and the Labour Party have been the dominant political parties in the country since the 1920s, leading to the UK being described as a two-party system. Since the 1920s other political parties have won seats in the House of Commons, although never more than the Conservatives or Labour, though. The 2020s marked the erosion of the two-party system and the growth of a multi-party system.

Administrative divisions§

The geographical division of the United Kingdom into counties or shires started in England and Scotland in the early Middle Ages, and was completed throughout Great Britain and Ireland by the early modern period. Modern local government by elected councils, partly based on the ancient counties, was established by separate Acts of Parliament: in England and Wales in 1888, Scotland in 1889 and Ireland in 1898, meaning there is no consistent system of administrative or geographic demarcation across the UK, and England and Wales, Scotland and Northern Ireland each have their own distinct jurisdictions. Until the 19th century there was little change to those arrangements, but there has since been a constant evolution of role and function. Local government in England is complex, with the distribution of functions varying according to local arrangements. The upper-tier subdivisions of England are the nine regions, used mainly for statistical purposes. One of the regions, Greater London, has had a directly elected assembly and mayor since 2000 after popular support for the proposal in a 1998 referendum. Local government in Scotland is divided into 32 council areas with a wide variation in size and population. The cities of Glasgow, Edinburgh, Aberdeen and Dundee are separate council areas, as is the Highland Council, which includes a third of Scotland's area but only just over 200,000 people. Local councils are made up of elected councillors, of whom there are 1,223. Local government in Wales comprises 22 unitary authorities, each led by a leader and cabinet elected by the council itself. These include the cities of Cardiff, Swansea and Newport, which are unitary authorities in their own right. Elections are held every four years under the first-past-the-post system. Local government in Northern Ireland since 2015 has since been organised into 11 district councils, each elected by single transferable vote. Their powers are limited to services such as waste collection, dog control, and maintaining parks and cemeteries. This system was introduced after a 2008 decision by the executive to replace the previous structure of 26 districts which had been in place since 1973.