2016 Brexit referendum

2016 Brexit referendum
Dgp4004 · CC BY-SA 4.0 · source
Name	2016 United Kingdom European Union membership referendum
Date	23 June 2016
Country	United Kingdom
Electorate	46,500,001
Turnout	72.2%
Result	Leave 51.9%, Remain 48.1%

Contents

2016 Brexit referendum The 2016 United Kingdom European Union membership referendum was a nationwide plebiscite held on 23 June 2016 in the United Kingdom, asking whether the United Kingdom should remain a member of the European Union or leave the European Union. The referendum followed political developments around the Conservative Party (UK), divisions involving David Cameron, and pressures from the United Kingdom Independence Party and coalition debates with the Liberal Democrats (UK). The vote produced a narrow victory for the leave side, prompting the resignation of Prime Minister David Cameron and the accession of Theresa May.

Background

The referendum was promised in the 2015 manifesto of the Conservative Party (UK) after the party won the 2015 United Kingdom general election and negotiated a set of reforms with the European Council and European Commission. Campaigns were shaped by long-standing Eurosceptic currents in the Conservative Party (UK), the rise of the United Kingdom Independence Party under Nigel Farage, and debates following the Treaty of Lisbon era and enlargement of the European Union. Key actors included David Cameron, Boris Johnson, Michael Gove, Jeremy Corbyn, and senior figures from the Labour Party (UK) and Scottish National Party. Constitutional questions implicated devolved administrations in Scotland, Northern Ireland, and Wales, intersecting with pressures from the European Court of Justice and rulings related to European law.

The referendum campaign saw major organised groups such as Vote Leave, Leave.EU, and Britain Stronger in Europe; prominent political figures included Boris Johnson, Michael Gove, Nigel Farage, George Osborne, and Tony Blair. Financial support and endorsements came from personalities linked to Rupert Murdoch-associated media outlets and business figures like James Dyson and Richard Branson who voiced opposing views. International leaders including Barack Obama, Angela Merkel, François Hollande, and Donald Tusk commented on the stakes; institutions such as the Bank of England, European Central Bank, and International Monetary Fund issued analyses. Campaigns highlighted sovereignty, immigration, and trade relations with the European Single Market, invoking treaties like the Maastricht Treaty and referencing institutions such as the European Parliament and the Council of the European Union.

The UK Electoral Commission established rules for the referendum and regulated designated lead groups: Vote Leave for leave and Britain Stronger in Europe for remain. The official question used the language approved by the Parliament of the United Kingdom and administered by returning officers across England, Scotland, Wales, and Northern Ireland. Voting logistics involved the Electoral Commission, local authorities, and polling stations managed by councils including Westminster City Council and Glasgow City Council; postal voting and voter registration were overseen amid discussions involving the Representation of the People Act 1983 and the Electoral Registration and Administration Act 2013. Legal challenges referenced the High Court of Justice and electoral law precedents.

The national count gave 51.9% to leave and 48.1% to remain, with a turnout around 72.2%, producing varied results across regions: majorities for remain in London, Scotland, and some Northern Ireland constituencies, and leave majorities across many parts of England and Wales. International markets reacted with volatility involving the London Stock Exchange, the Bank of England intervened, and the Foreign and Commonwealth Office issued travel guidance. Political reactions included the resignation of Prime Minister David Cameron, congratulations and statements from figures such as Nigel Farage and criticism from leaders like Angela Merkel and Barack Obama; the European Commission and European Parliament initiated preparatory discussions about the consequences.

Theresa May became Prime Minister of the United Kingdom and later triggered Article 50 of the Treaty on European Union, beginning the formal withdrawal process with a notification to the European Council. The result drove debates within the Conservative Party (UK), contributed to leadership contests involving figures such as Boris Johnson and Michael Gove, and intensified divisions in the Labour Party (UK) under Jeremy Corbyn. The vote affected devolution politics in Scotland—reviving calls by Nicola Sturgeon for a second Scottish independence referendum—and raised questions in Northern Ireland linked to the Good Friday Agreement (1998). Subsequent negotiations produced the Withdrawal Agreement and associated protocols, including the contentious Northern Ireland Protocol.

Post-referendum analyses were produced by institutions such as the Bank of England, the International Monetary Fund, the Office for Budget Responsibility, and academic centres at University of Oxford, London School of Economics, and University of Cambridge. Studies examined impacts on trade with the European Union, investment patterns affecting the City of London, migration flows involving the European Economic Area, and legal implications for rights under the European Convention on Human Rights and the European Court of Justice. Social research by organisations like MigrationWatch UK and universities explored changes in public opinion, regional inequalities, and political realignment across parties including the Conservative Party (UK), Labour Party (UK), Liberal Democrats (UK), and Scottish National Party. Litigation and statutory scrutiny invoked courts including the Supreme Court of the United Kingdom and inquiries by parliamentary committees of the House of Commons and the House of Lords.