The agreement covers issues such as money, citizens` rights, border agreements and dispute resolution. 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. It was then concluded by the Council of the European Union on 30 January 2020.
Immediately after the announcement of a revised withdrawal agreement on October 17, 2019, Labour, the Liberal Democrats and the DUP said they could not support the new agreement.  After an unprecedented vote on 4 December 2018, MEPs ruled that the British Government was not complying with Parliament because it refused to give Parliament full legal advice on the consequences of its proposed withdrawal terms.  The focus of the consultation was on the legal effect of the “backstop” agreement for Northern Ireland, the Republic of Ireland and the rest of the United Kingdom with regard to the CUSTOMS border between the EU and the United Kingdom and its impact on the Good Friday agreement that led to the end of the unrest in Northern Ireland, including whether , according to the proposals, the UK would be certain that it would be able to leave the EU in a practical sense. The agreement was revised as part of the Johnson Department renegotiation in 2019. The amendments amend about 5% of the text The new relationship will not be clear until the end of the transition period, when the negotiations are completed.