Commission President Jean-Claude Juncker warned that London may have to abandon hopes of a trade deal unless it accepts the terms offered by the European Union, which are widely expected to include a hefty divorce bill. The country doesn't know what its future relationship with the bloc will look like - whether businesses will freely be able to trade, students can study overseas or pensioners will be allowed to retire easily in other European Union states. The European Commission president warned that other member states will "realize it's not worth leaving".
Jean-Claude Juncker thinks Brexit is a bad idea.
February 20, 2016: Cameron announces that he has negotiated a deal with European Union leaders which will give Britain "special status". These include getting a good free trade deal. "In Europe, you eat what's on the table or you don't sit at the table".
She was cleared to take the step when the European Union (Notification of Withdrawal) Act gained royal assent last week, after a Supreme Court ruling forced her to seek the approval of both Houses of Parliament.
July. 11: Following a heated leadership contest, Home Secretary Theresa May becomes Prime Minister-elect when her competitors withdraw from the race. It should be noted that the advance warning is only a matter of courtesy and not a formal procedure. "We will get on and make sure that Brexit works for everyone in the United Kingdom".
Although she succeeded David Cameron as prime minister soon after the June 23 Brexit referendum, she delayed triggering Article 50 to give herself time to work on her strategy for talks that are likely to determine her political legacy.
Though it would give more time to both negotiating sides, EU officials claim that the United Kingdom would have to continue paying into the EU budget and being subject to rulings from the European Court of justice during that time - but these are two of the reasons why Brexiters want to leave the EU rapidly.
Explaining Mrs May's preference for no deal over a bad deal, Mr Davis said: "The Prime Minister said, in terms, no deal is better than a bad deal".
Mrs May's spokesman appeared to rule out an early general election at the same time as revealing the date of Brexit, saying: "There is not going to be one".
However, May is still facing increasing pressure, especially from Scotland's First Minister Nicola Sturgeon.
September 18, 2014: Scottish voters decide in a referendum to remain part of the United Kingdom rather than become an independent country. If no deal is reached within two years, it is possible that Britain would be forced into what has been dubbed a "dirty Brexit".