structural:scholar_edition
The constitution of the United Kingdom comprises the written and unwritten arrangements that establish the United Kingdom of Great Britain and Northern Ireland as a political body. Unlike in most countries, no official attempt has been made to codify such arrangements into a single document, thus it is known as an uncodified constitution. This enables the constitution to be easily changed as no provisions are formally entrenched. The Supreme Court of the United Kingdom and its predecessor, the Appellate Committee of the House of Lords, have recognised and affirmed constitutional principles such as parliamentary sovereignty, the rule of law, democracy, and upholding international law. It also recognises that some Acts of Parliament have special constitutional status. These include Magna Carta, which in 1215 required the King to call a "common counsel" to represent the people, to hold courts in a fixed place, to guarantee fair trials, to guarantee free movement of people, to free the church from the state, and to guarantee rights of "common" people to use the land. After the Glorious Revolution, the Bill of Rights 1689 and the Claim of Right Act 1689 cemented Parliament's position as the supreme law-making body, and said that the "election of members of Parliament ought to be free". The Treaty of Union in 1706 and the Acts of Union 1707 Kingdoms of England, Wales and Scotland, the Acts of Union 1800 joined Ireland, but the Irish Free State separated after the Anglo-Irish Treaty in 1922, leaving Northern Ireland within the UK. After struggles for universal suffrage, the UK guaranteed every adult citizen over 21 years the equal right to vote in the Representation of the People Act 1928. After World War II, the UK became a founding member of the Council of Europe to uphold human rights, and the United Nations to guarantee international peace and security. The UK was a member of the European Union, joining its predecessor in 1973, but left in 2020. The UK is also a founding member of the International Labour Organization and the World Trade Organization to participate in regulating the global economy. The leading institutions in the United Kingdom's constitution are Parliament, the judiciary, the executive, and regional and local governments, including the devolved legislatures and executives of Scotland, Wales, and Northern Ireland. Parliament is the supreme law-making body, and represents the people of the United Kingdom. The House of Commons is elected by a democratic vote in the country's 650 constituencies. The House of Lords is mostly appointed by cross-political party groups from the House of Commons, and can delay but not block legislation from the Commons. To make a new Act of Parliament, the highest form of law, both Houses must read, amend, or approve proposed legislation three times and the monarch must give consent. The judiciary interprets the law found in Acts of Parliament and develops the law established by previous cases. The highest court is the twelve-person Supreme Court, as it decides appeals from the Courts of Appeal in England, Wales, and Northern Ireland, or the Court of Session in Scotland. UK courts cannot decide that Acts of Parliament are unconstitutional or invalidate them, but can declare that they are incompatible with the European Convention on Human Rights. They can determine whether the acts of the executive are lawful. The executive is led by the prime minister, who must maintain the confidence of a majority of the members of Parliament. The prime minister appoints the cabinet of other ministers, who lead the executive departments, staffed by civil servants, such as the Department of Health and Social Care which runs the National Health Service, or the Department for Education which funds schools and universities. The monarch in their public capacity, known as the Crown, embodies the state. Laws can only be made by or with the authority of the Crown in Parliament, all judges sit in place of the Crown and all ministers act in the name of the Crown. The monarch is for the most part a ceremonial figurehead and has not refused assent to any new law since the Scottish Militia Bill in 1708. The monarch is bound by constitutional convention. Most constitutional questions arise in judicial review applications, to decide whether the decisions or acts of public bodies are lawful. Every public body can only act in accordance with the law, laid down in Acts of Parliament and the decisions of the courts. Under the Human Rights Act 1998, courts may review government action to decide whether the government has followed the statutory obligation on all public authorities to comply with the European Convention on Human Rights. Convention rights include everyone's rights to life, liberty against arbitrary arrest or detention, torture, and forced labour or slavery, to a fair trial, to privacy against unlawful surveillance, to freedom of expression, conscience and religion, to respect for private life, to freedom of association including joining trade unions, and to freedom of assembly and protest.