Brexit timeline in full: What happened from the day Cameron calls referendum
JANUARY 23, 2013: Prime Minister David Cameron promises an In/Out referendum if the Tories win the election
MAY 22, 2014: Ukip, led by Nigel Farage, wins 26 per cent of the vote in the European elections
MAY 7, 2015: The Tory party regains power by a majority of 12
JUNE 23, 2016: 17,410,742 people vote to leave the EU
JUNE 24 2016: A dejected Mr Cameron resigns as Prime Minister and Mr Farage quits as Ukip leader
JULY 13, 2016: Theresa May becomes Prime Minister
NOVEMBER 3, 2016: The High Court rules Mrs May cannot trigger Article 50 of the Lisbon treaty, which sets out how an EU country might voluntarily leave the union, without first winning a vote in parliament.
FEBRUARY 14, 2017: The House of Commons votes to allow Article 50
MARCH 29, 2017: Article 50 is triggered – signalling the start of Brexit
MARCH 30, 2017: EU Withdrawal Bill, ensuring European law will no longer apply in the UK after Brexit, is published
JUNE 8, 2017: A snap general election sees the Tories lose their 2015 majority. The party strikes a deal with the DUP
JUNE 26, 2017: Formal Brexit negotiations between Britain and the EU begin
DECEMBER 13, 2017: Tory rebels side with Labour and force the Government to guarantee a vote on the final Brexit deal once it is agreed with Brussels
JULY 7, 2018: Mrs May summons Cabinet ministers to Chequers to discuss Brexit and the possibility of no-deal scenario
SEPTEMBER 20, 2018: EU rejects Mrs May’s Chequers Deal saying it is “unworkable”
OCTOBER 20, 2018: More than 500,000 people take part in the People’s Vote March calling for a second referendum
OCTOBER 22, 2018: Mrs May says 95 percent of a Brexit deal has been agreed with the EU amid speculation she could face a no-confidence vote triggered by Tory backbenchers
NOVEMBER 14, 2018: Cabinet ministers agree to back Mrs May’s Draft Brexit Agreement
NOVEMBER 20, 2018: The UK Supreme Court refuses the Government’s bid to block a court case relating to revoking Article 50 from reaching the European Court of Justice
NOVEMBER 25, 2018: The other 27 EU leaders unanimously back Mrs May’s Brexit deal
DECEMBER 12, 2018: Mrs May wins a no-confidence vote called for by least 48 Conservative MPs
JANUARY 15, 2019: MPs reject Mrs May’s Brexit deal in a historic vote – the biggest government defeat since 1924
JANUARY 16, 2019: Mrs May secures a second no-confidence vote
JANUARY 29, 2019: MPs tell the PM to renegotiate the Withdrawal Agreement and replace the backstop with “alternative arrangements” to keep the Irish border open after Brexit
JANUARY 30, 2019: Nigel Farage delivers a speech in the European Parliament saying no country would have signed Mrs May’s deal with the EU unless they had just been “defeated in war”
FEBRUARY 7, 2019: EU rejects Withdrawal Agreement changes
MARCH 14, 2019: MPs vote against a second referendum
MARCH 27, 2019: Mrs May says she will “not lead the UK in the next stage of Brexit negotiations”
MARCH 29, 2019: The date we were meant to leave the EU, exactly two years after Article 50 triggering
APRIL 10, 2019: Mrs May requests a second extension to the date when Britain leaves. EU leaders say yes to October 31
MAY 24: An emotional Mrs May says she will quit on June 7
JULY 24, 2019: Boris Johnson becomes Prime Minister
SEPTEMBER 24, 2019: Supreme Court rules the suspension of Parliament was unlawful
DECEMBER 13, 2019: An 80-seat Commons majority is confirmed for the Tories and Mr Johnson vows to “get Brexit done” by January 31
DECEMBER 20, 2019: The PM’s deal goes before Parliament
JANUARY 23, 2020: The EU (Withdrawal Agreement) Act receives Royal Assent
JANUARY 29, 2020: MEPs in Brussels back terms of UK’s exit
JANUARY 31, 2020: Britain leaves the EU at 11pm
FEBRUARY 1, 2020: The countdown begins on an 11-month transition period with talks on a new trade deal