On 23 June 2016 citizens of the United Kingdom (UK) voted to leave the European Union (EU). On 29 March 2017 the UK formally notified the European Council of its intention to leave the EU by triggering of Article 50 of the Lisbon Treaty.
The Article 50 notification letter
Statement by the European Council on the UK notification
Remarks by President Donald Tusk following the UK notification
Remarks by President Donald Tusk on the next steps following the UK notification
Article 50 of the Treaty on European Union – Q&A
The negotiation process
The Commission was appointed as the Union negotiator who will negotiate on behalf of the 27. The Commission nominated Michel Barnier as chief negotiator. It will report back to leaders and to the Council throughout the negotiation and will also keep the European Parliament “closely and regularly informed”. The Commission’s aim will be to ensure a maximum level of transparency throughout the negotiations.
At a Special European Council on 29 April 2017, the EU27 leaders unanimously adopted guidelines for the Brexit talks ahead. These define the framework for negotiations and set out the overall EU positions and principles.
On 3 May the Commission presented to the Council a recommendation for a Council decision on the Brexit negotiations. It includes draft negotiating directives (detailed mandate for the Commission).