On July 24, 2018, the government presented a white paper on the bill and how legislation works.  The bill was first introduced by the government at the second session stagnated on 21 October 2019 by the government, entitled “A Bill to Implement, and make other provision in connection with, the agreement between the United Kingdom and the EU under Art 50, paragraph 2 of the Treaty on European Union which sets the arrangements for the rekingdom from the EU”.  This bill was not discussed further after second reading in the House of Commons on October 22, 2019, and passed on November 6, when Parliament was dissolved in preparation for the 2019 general election. The bill described by The Independent as a government “incision” on Conservative rebels would have allowed MPs to review and amend each “line-by-line” agreement.  Conservative MP Steve Baker wrote to The Times stating that the new bill “gives any agreement that we have a good reputation with the EU in British law” and that it is compatible with the referendum result of “giving more control over how we are governed by the British Parliament.”  On 19 December 2019, the British government introduced the amended EU Law (Withdrawal Agreement) in the House of Commons. The aim of the bill is to “implement the agreement between the UK and the EU, in accordance with Article 50, paragraph 2, of the Treaty on the European Union, which sets out the terms of the UK`s exit from the EU, and to adopt other provisions relating to the EU.” The bill and the accompanying explanations are available on the following link: services.parliament.uk/Bills/2019-20/europeanunionwithdrawalagreement/documents.html See the amendments of Lords on the new amendment page Lords Full text of the Act of Parliament as it was passed by Parliament (this is the law in its original state). The law may have been amended by another statute and these amendments are not presented in this version). On January 21, 2020, the House of Lords passed the law after passing five amendments. However, these amendments were overturned by the House of Commons the next day.   This Act received royal approval on 23 January 2020, nine days before the United Kingdom`s exit from the European Union. www.parliament.scot/S5_Bills/SPLCM-S05-29.pdf The government submits a delegated notification letter for all public bills (including hybrids) to justify the devolution of powers, usually to ministers, in the bill. The European Union (Withdrawal Agreement) Act 2020 (c. 1) is a legislative act of the British Parliament that provides for the ratification of the Brexit withdrawal agreement and its inclusion in UK national law.
It is the most important constitutional law passed by the Johnson government`s parliament. The withdrawal agreement was the result of the Brexit negotiations.  Letter to the Minister of Government and Constitutional Relations of the Cabinet and Secretary of State for Leaving the European Union – 8 January 2020 (173KB PDF) Details of deliberations in the Public Bill Committee or the House Committee, on each phase of report (reflection) and on any consideration of the messages of Lords Amendments or the following lords. The documents contain the text of the amendments discussed at each meeting and indicate whether they were agreed, negative (unass approving), not consulted, postponed or withdrawn. The law provides for legislation relating to the withdrawal agreement, the EEA-EFTA separation agreement and the agreement on the rights of Swiss citizens who are collectively “agreements”. When implementing these agreements, the law protects the rights of EU and EEA citizens, as well as Swiss citizens who live and work in the UK.