Secretary of State for Northern Ireland Julian Smith, Business Secretary Andrea Leadsom and Environment Secretary Theresa Villiers all leave the government.
The House of Commons of the United Kingdom votes 358–234 to pass the government's Brexit withdrawal agreement for the United Kingdom to leave the European Union on 31 January 2020. The bill will now head to the House of Lords for final approval. The bill also rules out extending trade talks with the EU beyond 31 December 2020, known as the "transition period".
Dominic Raab says the UK Government will abide by the upcoming Supreme Court's ruling on the lawfulness of Prime Minister Boris Johnson's prorogation of Parliament. When asked if the Government would prorogue Parliament again if it wins, he answers that he's "keen not to take levers off the table that weaken the position of the UK in Brussels".
Conservative Party members of parliament vote in a second ballot to choose the next leader of the party to replace outgoing Prime Minister David Cameron. The Home Secretary Theresa May secured the highest number votes with 199, while Department of Energy and Climate Change minister Andrea Leadsom received the second highest amount, with 84. The Secretary of State for Justice Michael Gove received just 46 votes and is eliminated from the race, meaning a run-off contest will now take place between May and Leadsom, with the result to be announced on September 9.
On January 18, 2016, the British Parliament will debate a petition, signed by more than 560,000 people, calling for the Home Secretary to ban United States Republican Party presidential candidate Donald Trump from entering the United Kingdom because of 'hate speech' that is unacceptable behavior, non-conducive to the public good. The conclusion reached by the lawmakers will not be binding on the UK government.
Italian President Giorgio Napolitano calls on the British government to explain why it did not inform Italy about an attempt to rescue hostages Chris McManus and Franco Lamolinara until after the operation had been carried out.