Brexit: A Timeline

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Brexit Timeline feature on the United Kingdom leaving the European Union, including past events, ongoing affairs, and likely and potential future events.

Updated: 13 July 2016, and will continue to be updated as more information is made known.

Brexit Timeline
1 January 1973

United Kingdom Joins EEC

On its 3rd application, the UK is finally admitted into the the European Economic Community (EEC), the EU's predecessor. Charles de Gaulle, President of France at the time, had vetoed the UK's first two applications, feeling that the UK was "incompatible with Europe." [1]

5 June 1975

United Kingdom EC Referendum of 1975

Also known as the "Common Market Referendum," the UK used it to monitor support for the their continued membership in the European Communities (EC). Voters had a majority of support for EEC membership, with 67% in favor. This was historic, however, as it was the first UK-wide referendum ever held.

1 November 1993

Maastricht Treaty Creates EU

Signed on 7 February 1992 by the EC members, the Maastricht Treaty created the European Union and led to the establishment of the single euro currency.


Eurosceptic UKIP Formed

United Kingdom Independence Party (UKIP), a Eurosceptic political party, is founded. UKIP will later become a key instrument in the Brexit vote and outcome.

23 January 2013

PM Promises Referendum

PM David Cameron pledges an in/out referendum if the Conservatives win the upcoming election.[2]

December 2015

EU Referendum Act Approved

European Union Referendum Act 2015 (c. 36) was introduced to the House of Commons on 28 May 2015, approved by the House of Lords on 14 December, and was given Royal Assent on 17 December. Made provision for holding referendum in the UK no later than 31 December 2017.

20 February 2016

Referendum Date Set

Prime Minister David Cameron announces that referendum would be held for voting on 23 June 2016.

23 June 2016

Brexit Referendum Voting

The Electorate votes on the question, ``Should the United Kingdom remain a member of the European Union or leave the European Union?``

24 June 2016

Leave Wins

Brexit vote tallied over the night of 23 June, and the results emerge that the ``Leave`` campaign has won, garnering 51.9% of the vote to the ``Remain`` camp's 48.1%.

24 June 2016

Scottish Gov't Wants Out

The Scottish Government announces that a second referendum on their independence from the UK is likely. Scotland had a majority ``Remain`` vote, and the news angered and saddened many there. They may try to join EU as sovereign nation.

24 June 2016

David Cameron Resigns

Prime Minister David Cameron announced that he will resign by the autumn of 2016.

24 - 25 June 2016

Brexit Emboldens Others

Prominent Eurosceptic figures from other countries praise the UK for Brexit and encourage a similar result at home: Marine Le Pen of France, Czech Prime Minister Bohuslav Sobotka, and the Dutch populist, Geert Wilders, among others.

13 July 2016

Theresa May is New PM

Theresa May starts her job as British Prime Minister, after her competitor, Andrea Leadsom, pulled out days earlier. May is the UK's second female in this top position, after Margaret Thatcher.


UK Must Declare Withdrawal

Though the vote's results have been announced, the UK still must invoke Article 50 of the Lisbon Treaty by formally declaring their intentions to the European Union. Heads of many EU countries urge the UK to act swiftly, but many in the UK urge not to rush. Now that PM May is in charge, she will be urged to commence the withdrawal as soon as possible by her EU counterparts.


UK Must Renegotiate Trade Deals

The United Kingdom's trade deals with other nations were combined with the deals of all members of the European Union. The UK will have to negotiate new deals with other countries for trade purposes, as well as in other areas.


  1. 1967: De Gaulle says ‘non’ to Britain – again“. BBC News. 27 November 1976. Retrieved 25 June 2016.
  2. David Cameron promises in/out referendum on EU“. BBC. 23 January 2013. Retrieved 25 June 2016.

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