 The Brexit negotiations are the negotiations currently taking place between the United Kingdom and the European Union for the prospective withdrawal of the United Kingdom from the European Union, following the UK's referendum on EU membership in June 2016. The negotiating period began on March 29, 2017 when the United Kingdom served the withdrawal notice under Article 50 of the Treaty on European Union. The period for negotiation stated in Article 50 is two years from notification, unless an extension is agreed. On June 19, 2017, British Secretary of State for Exiting the European Union, David Davis, arrived in Brussels to begin negotiation of the terms of the withdrawal with the chief negotiator appointed by the European Commission, Michel Barnier. The scope of the negotiations could include the withdrawal agreement, the temporary transitional period agreement and another agreement for the post-transitional period.attribution needed. Brexit negotiation might also need to address free trade agreement treaties between the European Union and its members including the UK for one part and third countries for the other part and the tariff rate quota, which might be split or renegotiated.