2016 United Kingdom European Union membership referendum

2016 United Kingdom European Union membership referendum
This vector image includes elements that have been taken or adapted from this fi · 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
Votes cast	33,577,342
Turnout	72.2%
Result	Leave 51.9%, Remain 48.1%

2016 United Kingdom European Union membership referendum was a nationwide poll held on 23 June 2016 to decide whether the United Kingdom should remain a member of the European Union or leave that bloc. The referendum produced a vote to leave, commonly called "Brexit", which prompted the resignation of David Cameron, the calling of negotiations under Article 50 of the Treaty on European Union, and major changes across British politics, international relations, and markets. The result triggered immediate political, legal, and institutional consequences for the United Kingdom, the European Commission, and member states including Germany, France, and Ireland.

Background

During the 2015 United Kingdom general election the Conservative Party campaigned on holding an "in/out" referendum as part of its manifesto, responding to pressure from the United Kingdom Independence Party and Eurosceptic Conservatives such as Boris Johnson and Michael Gove. The European Communities Act 1972 and the Treaty on European Union provided the legal context for membership, while prior referendums — notably the 1975 United Kingdom European Communities membership referendum — framed public debate. Negotiations between David Cameron and EU institutions including the European Council and the European Commission produced a 2016 package of reforms aimed at repatriation of competences and safeguarding the single market, which shaped positions of actors such as the Labour Party (UK), the Liberal Democrats (UK), the Scottish National Party, and devolved administrations in Scotland, Wales, and Northern Ireland.

Campaigns

Two principal campaigns were officially designated: Vote Leave and Britain Stronger in Europe. Prominent figures in Vote Leave included Nigel Farage, Boris Johnson, and Michael Gove, while Stronger in Europe featured David Cameron, George Osborne, and Ed Miliband. Other groups such as Leave.EU, Business for Britain, Open Britain, and trade associations like the Confederation of British Industry participated. International actors including Barack Obama, Jean-Claude Juncker, and Angela Merkel made public interventions. Media outlets such as The Sun (United Kingdom newspaper), The Daily Telegraph, and The Guardian played influential roles, as did think tanks like the Institute for Fiscal Studies and the National Institute of Economic and Social Research. Campaign debates focused on topics involving the European Court of Justice, the Single European Act, immigration policy involving the Schengen Area, sovereignty narratives referencing the Magna Carta and the Bill of Rights 1689, and economic projections from institutions such as the International Monetary Fund and the World Bank.

Referendum question and procedure

The referendum asked voters to choose between two options: "Remain a member of the European Union" or "Leave the European Union". The legal framework was set by the European Union Referendum Act 2015, administered by the Electoral Commission (United Kingdom), and operated under rules from the Representation of the People Act 1983 for franchise definitions. The franchise included citizens of the United Kingdom, the Republic of Ireland, and qualifying Commonwealth citizens resident in the UK, as well as citizens of Gibraltar. Voting took place across constituencies represented in the House of Commons and counted in local counting areas, with the Electoral Reform Society and international observers monitoring conduct. The High Court of Justice (England and Wales) and the Supreme Court of the United Kingdom later considered legal challenges to aspects of procedure and government action related to the referendum.

Voting and results

Turnout was 72.2%, with 17,410,742 votes for Leave and 16,141,241 for Remain, producing a 51.9% to 48.1% split in favor of leaving. Regional patterns showed majorities for Leave in much of England and Wales, while Scotland and Northern Ireland voted to remain, with notable Remain majorities in London and metropolitan areas such as Manchester and Birmingham. Results were declared by local counting officers in areas including Bristol, Leeds, and Liverpool, and overall declaration occurred in Grafton House and other regional centers. Financial markets reacted sharply: the FTSE 100 and the Foreign exchange market saw volatility, with the pound sterling falling against the United States dollar and investors responding in equity and bond markets. Polling organizations such as YouGov and Ipsos MORI had produced varied forecasts during the campaign.

Aftermath and political consequences

Following the result, David Cameron announced his resignation and was succeeded by Theresa May, who invoked Article 50 of the Treaty on European Union to begin withdrawal negotiations with the European Union under the leadership of Donald Tusk at the European Council and Michel Barnier for the European Commission. Parliamentary actions involved votes in the House of Commons on the process for exit, and debates over the Scotland Act 1998 and devolution settlements escalated as the Scottish Government and Welsh Government reacted. Political realignments affected the Labour Party (UK), produced leadership contests involving figures such as Jeremy Corbyn, and influenced subsequent general elections and legislative agendas. International relations with states including the United States, China, and Ireland were reshaped by trade negotiations, and institutions such as the European Court of Justice and the World Trade Organization became focal points for legal and economic transition.

Legal challenges and investigations

Legal scrutiny included the R (Miller) v Secretary of State for Exiting the European Union litigation in the Supreme Court of the United Kingdom, which ruled that parliamentary approval was required to trigger Article 50. Investigations by the Electoral Commission (United Kingdom) examined campaign finance, including inquiries into Leave.EU and Vote Leave, and led to fines and referrals to law enforcement such as the Crown Prosecution Service and the Metropolitan Police Service. Data and digital campaigning prompted probes referencing entities like Cambridge Analytica and regulatory attention from the Information Commissioner's Office. International legal questions involved agreements between the United Kingdom and member states on citizens' rights under the Charter of Fundamental Rights of the European Union, as well as future trade law disputes to be adjudicated under existing frameworks.

Category:Referendums in the United Kingdom Category:Politics of the United Kingdom Category:2016 in the United Kingdom