A short history of the United Kingdom

The islands were settled after the last ice age, farmed from around 4000 BC, and left monuments including Stonehenge and Skara Brae. Rome held what is now England and Wales from AD 43 to the early fifth century, never conquering Scotland and building Hadrian's Wall as its northern frontier.

After Rome, Anglo-Saxon kingdoms formed in England and were unified in the tenth century. The Norman Conquest of 1066 replaced the English ruling class wholesale and reoriented England towards France for centuries. It remains the last successful invasion.

Magna Carta in 1215 established, in principle, that the king was subject to law. Most of its clauses were about baronial grievances and were quickly repealed, but the principle survived and is still cited.

Parliament evolved from the thirteenth century, gaining the power to grant taxation and, through that, leverage over the Crown. The pattern of English constitutional development — power accumulating in Parliament by increments rather than by design — starts here.

Wales was annexed and legally integrated with England by the Laws in Wales Acts of 1536 and 1543, which also made English the sole language of administration.

England and Scotland shared a monarch from 1603, when James VI of Scotland inherited the English throne, but remained separate states with separate parliaments. The Acts of Union in 1707 merged the parliaments into a single Parliament of Great Britain, while explicitly preserving Scotland's separate legal system, church and education — a preservation that made devolution in 1999 far easier.

The seventeenth century was the violent exception to British constitutional continuity: civil war, the execution of Charles I in 1649, a republic under Cromwell, restoration in 1660, and the Glorious Revolution of 1688 which established that Parliament, not the Crown, held ultimate power. The Bill of Rights 1689 remains in force.

Ireland was joined to Great Britain by the Acts of Union in 1801. The Great Famine of the 1840s killed around a million people and drove a million more to emigrate, and is central to Irish national memory and to the modern relationship between the two states. After the 1916 Easter Rising and the Irish War of Independence, most of Ireland left in 1922, leaving six northern counties as Northern Ireland.

The Industrial Revolution began in Britain in the late eighteenth century — the first place in the world where mechanised, coal-powered manufacturing transformed an entire economy. Britain became the workshop of the world, urbanised faster than anywhere had before, and generated both enormous wealth and appalling urban conditions.

The British Empire reached its greatest extent after the First World War, covering roughly a quarter of the world's land surface and population. Its legacy is contested and its history is not a single story: it encompassed settler colonies, trading posts, protectorates and the direct rule of India, and it involved the transatlantic slave trade, in which British ships carried an estimated 3.1 million enslaved Africans before abolition of the trade in 1807 and of slavery across most of the empire in 1833.

Decolonisation was rapid and largely postwar. India and Pakistan became independent in 1947, most African colonies between 1957 and 1968, and Hong Kong was handed to China in 1997. The Commonwealth, a voluntary association of 56 states, is the main institutional legacy.

How the empire is taught and commemorated is one of the most contested areas of British public argument, and this page deliberately reports the scale and the facts rather than adjudicating that argument.

The First World War killed around 886,000 British service personnel from a population of 46 million. The Second World War brought sustained aerial bombardment of British cities, the evacuation from Dunkirk, the Battle of Britain, and a total mobilisation of the civilian economy that changed expectations of what the state could do.

That change produced the post-war settlement. The 1942 Beveridge Report identified five 'giant evils' — want, disease, ignorance, squalor and idleness — and the 1945 Labour government built the response: National Insurance, the National Health Service founded on 5 July 1948, and a large programme of council housing.

The NHS remains the single most politically protected institution in Britain. Founded free at the point of use and funded from general taxation, it has survived every subsequent government of both parties largely intact in principle, whatever the arguments about funding and structure.

Postwar Britain also began large-scale immigration from the Commonwealth, symbolised by the arrival of the Empire Windrush in 1948. The Windrush generation's later treatment — British residents wrongly classified as illegal immigrants because the Home Office had destroyed landing card records — became a major scandal from 2018 and led to a compensation scheme still running.

Britain joined the European Economic Community on 1 January 1973 after two French vetoes, and confirmed membership in a 1975 referendum with 67 per cent in favour. Membership was contested throughout, with both major parties splitting on it at different points.

The Thatcher governments from 1979 reshaped the economy through privatisation, financial deregulation, the defeat of the 1984–85 miners' strike and a decisive shift from manufacturing towards services. The consequences — for the City of London, for former industrial regions, and for the structure of the economy — remain the reference point for most British economic argument.

Devolution followed referendums in 1997 and 1998, creating the Scottish Parliament, the Welsh Assembly and the Northern Ireland Assembly in 1999. The 1998 Belfast (Good Friday) Agreement ended most of the violence of the Troubles, a conflict that had killed around 3,500 people since 1969.

A referendum on Scottish independence in 2014 was defeated 55 to 45 per cent. A referendum on EU membership on 23 June 2016 produced 51.9 per cent for leave on a 72 per cent turnout, with England and Wales voting leave and Scotland and Northern Ireland voting remain. The UK left the EU on 31 January 2020, and the transition period ended on 31 December 2020.