The most important cross-cutting difference between the October 2019 and the Va proposals in November 2018 is: that the previous “backstop” maintained a much more comprehensive and comprehensive series of relations on goods trade between the EU and the UK on a proposed customs territory between the UK and the EU (although this would not have prevented further obstacles to economic relations , since it did not include trade in services, transport of people and workers, capital movements, transportation services, etc.). The withdrawal agreement also contains provisions for the United Kingdom to leave the Convention setting the status of European schools, with the United Kingdom bound by the Convention and accompanying regulations on accredited European schools until the end of the last academic year of the transition period, i.e. at the end of the spring semester 2020-2021.  After a period of intensive negotiations, the EU and the UK have reached a new settlement, resulting from an updated withdrawal agreement (WA) and a political declaration (PD). These were published on 17 October 2019. If the EP approves the agreement by a simple majority, it will have to be adopted by the EU by the overqualified majority of the European Council of the remaining 27 Member States (20 from the other EU-27 representing 65% of the EU-27 population). The British Parliament approved the draft agreement by adopting on 23 January 2020 the implementing laws (the 2020 Withdrawal Agreement Act) of the European Union (withdrawal agreement). Following the signing of the agreement, the UK Government adopted and tabled the UK`s ratification instrument on 29 January 2020.  The agreement was ratified by the Council of the European Union on 30 January 2020, after approval by the European Parliament on 29 January 2020. The UK`s withdrawal from the EU came into force on 31 January 2020 at 11 .m GMT, when the withdrawal agreement came into force in accordance with Article 185.
On 13 November 2018, the EU decided that “decisive progress” had been made in the Brexit negotiations, and on 14 November the European Commission and the UK Government published a draft withdrawal agreement as well as three protocols (on the border between Ireland and Northern Ireland, the SOVEREIGN territories of the United Kingdom in Cyprus and Gibraltar) and nine annexes. The text of the negotiated withdrawal agreement and the political declaration on the framework for future EU-UK relations were approved by EU heads of state and government at a specially convened European Council on 25 November 2018. The most important elements of the draft agreement are: Immediately after the announcement of a revised withdrawal agreement on October 17, 2019, Labour, the Liberal Democrats and the DUP declared that they could not support the new agreement.  The EU and the United Kingdom have reached an agreement on the withdrawal agreement with a revised protocol on Ireland and Northern Ireland (abolition of the “backstop”) and a revised political declaration. On the same day, the European Council (Article 50) approved these texts. Both the draft withdrawal agreement and the political declaration have a potentially considerable impact on the British Constitution. Some of the constitutional issues that are likely to arise in each bill on the implementation of the withdrawal agreement are: the same conditions of competition concerned taxation, environmental protection, labour standards, state aid and competition. These have been replaced by less specific and non-binding commitments in the political declaration to impose these principles in any future trade agreement between the EU and the UK.