The United Kingdom starts officially tomorrow the two-year exit process through negotiations, leading to what the referendum entailed; a full separation of UK from the European Union.The exit process from the 28-nation EU, known as Brexit, will end an over 40 years of relationships. UK Prime Minister Theresa May will notify the President of the European Council Donald Tusk that England's government is enforcing tomorrow article 50 of the Lisbon Treaty, which will put an end to the UK's relations with the EU. 
After Article 50 of the Lisbon Treaty is triggered, EU leaders will meet in late April to agree their negotiating strategy and the European Commission will receive a detailed negotiating mandate the following month.The European Council President Tusk announced the date of the summit on Twitter, adding: "Priority must be certainty, clarity for all: citizens, companies & member states." The Lisbon Treaty, which became a law in December 2009, is designed to make the EU "more democratic, more transparent and more efficient" and is an agreement signed by the heads of state and governments of countries that are EU members, and triggering Article 50 means the leaving country has two years to negotiate an exit deal. The timescale can be extended, but only by the unanimous consent of the European Council, so every other member state Government would have to agree. 
Article /50/ consist of five elements; the withdrawing State may decide to withdraw from the Union in accordance with its own constitutional requirements, shall notify the European Council of its intention, the Union shall negotiate and conclude an agreement with that State, setting out the arrangements for its withdrawal, taking account of the framework for its future relationship with the Union.
That agreement shall be negotiated in accordance with Article 218(3) of the Treaty on the Functioning of the European Union. It shall be concluded on behalf of the Union by the Council, acting by a qualified majority, after obtaining the consent of the European Parliament. The member of the European Council or of the Council representing the withdrawing Member State shall not participate in the discussions of the European Council or Council or in decisions concerning it.The Treaties shall cease to apply to the State in question from the date of entry into force of the withdrawal agreement or, failing that, two years after the notification referred to in paragraph 2, unless the European Council, in agreement with the Member State concerned, unanimously decides to extend this period. 
For the purposes of paragraphs 2 and 3, the member of the European Council or of the Council representing the withdrawing Member State shall not participate in the discussions of the European Council or Council or in decisions concerning it.A qualified majority shall be defined in accordance with Article 238(3)(b) of the Treaty on the Functioning of the European Union. 
Before the negotiations between London and Brussels concerning the future relationship between them, Britain will be presented with a GBP50 billion "exit bill" by the European Union; it include the UK’s share of outstanding pensions liabilities, loan guarantees and spending on UK-based projects.UK will also have to come to a resolution about the fate of 1.2 million British residing in the European Union and more than three million European Union citizens living in Britain.
 The process of exiting the European Union will first start when EU leaders hold meeting for first 'Brexit summit' on April 29 to adopt its "Brexit guidelines". Prime Minister Theresa May will reveal plans for post-Brexit Great Repeal Bill later this week as Britain begins the process of quitting the EU. The proposal aims to end the European Union's legal supremacy in the UK by converting all EU requirements into British law as soon as Britain exits the EU. 
On October 2018, a concluded negotiations will have to be made six months before Britain leaves the EU to give the Houses of Commons and Lords, as well as the European Parliament and other national assemblies, time to ratify the final Brexit deal. On March 2019, Britain must leave EU by this date. A transitional deal to avoid cliff-edge changes expected to kick in. 
For the EU, the next few years represent one of the most crucial chapters in its history. EU Parliament head Guy Verhofstadt told Business Insider that Brexit was an opportunity for the EU to become a tighter, more unified family of nations. It is worth noting, though, that continent-wide surveys conducted since Brexit show that support for the EU generally remains reasonably high across the 27 remaining member states. As Britain tries to ensure safe exit from the European Union, it also seeks to keep members of the Kingdom: Scotland, Wales and Northern Ireland united. This is at a time when Scotland is gearing ahead with independence referendum. 
UK Prime Minister Theresa May seeks to keep kingdom united after Scotland and Northern Ireland voted against leaving the European Union, while England and Wales voted in favor of the Brexit. Scottish First Minister Nicola Sturgeon is pressing for a referendum in the second half of 2018 or early 2019, ahead of Brexit. The British prime minister had said "now is not the time" to reopen Scotland's independence debate." The Scottish Parliament is expected to vote for a second independence referendum. 
Results of a poll published a week ago put backing for independence at 44 percent. After obtaining backing from the Scottish Parliament, Nicola Sturgeon should seek the green light from British Parliament and the government of Prime Minister Theresa May. However, it would be politically difficult to refuse the Scottish Parliament vote. 
If Scotland voted to leave the Union, Northern Ireland will be shaken as Republicans from the Sinn Fein and Unionist parties must reach a quick agreement to form a shared government before a return to direct British rule of the province. Northern Ireland has been in a political crisis since the resignation of the former Sinn Fein leader and deputy first minister Martin McGuinness following a row between Sinn Fein and the Democratic Unionist Party over a green energy scheme. 

Source: QNA