The reception of the agreement in the House of Commons ranged from cold to hostile, and the vote was delayed by more than a month. Prime Minister May has received a motion of no confidence within her own party, but the EU has refused to accept further changes. The free movement of the EU, i.e. the right to live, work, study or social protection throughout the EU and the UK, continues to apply during the transitional period. The election of Joe Biden as President of the United States has placed more emphasis on the question of future relations between the EU and the United Kingdom. If there is no agreement, Britain could be more isolated in the world than under President Donald Trump. Biden, an Irish-American, has associated any future trade agreement between Britain and the United States with peacekeeping on the island of Ireland. The end of the transition period will lead to significant changes, a deal to be reached on future relations. On 1 January 2021, the UK will no longer be part of the EU internal market and customs union and will be free to implement trade agreements with third countries. On 17 October 2019, the UK and the EU agreed on the terms of the UK`s exit from the EU (Brexit) and a transitional period until 31 December 2020. The UK left the EU as part of a ratified divorce agreement. Its provisions on withdrawal conditions – on financial regulation, citizens` rights and Northern Ireland – will be incorporated into a binding international treaty. The new relationship will not be highlighted until the end of the transition period, when negotiations are completed.
The new agreements will enter into force after the transition period that ends on December 31, 2020. EU countries must first approve these new agreements. If Britain and the EU fail to reach an agreement, there will be a „non-deal“ of Brexit. This will be done at the end of the transition period. This is the third time the British Parliament has rejected the agreement. The UK has until 12 April 2019 to decide how to proceed: the agreement covers issues such as money, citizens` rights, border agreements and dispute settlement. It also includes a transition period and an overview of the future relationship between the UK and the EU. It was published on 14 November 2018 and was the result of the Brexit negotiations. The agreement was approved by the heads of state and government of the other 27 EU countries and by the British government led by Prime Minister Theresa May, but it faced opposition from the British Parliament, which needed approval for ratification. The approval of the European Parliament would also have been necessary. On January 15, 2019, the House of Commons rejected the withdrawal agreement by 432 votes to 202.  The House of Commons again rejected the agreement by 391 votes to 242 on 12 March 2019 and rejected it a third time, on 29 March 2019, by 344 votes to 286.
On 22 October 2019, the revised withdrawal agreement negotiated by Boris Johnson`s government approved the first phase in Parliament, but Johnson halted the legislative process when the accelerated approval programme failed to receive the necessary support and announced his intention to declare a general election.  On 23 January 2020, Parliament ratified the agreement by adopting the withdrawal agreement; On 29 January 2020, the European Parliament approved the withdrawal agreement.