A UK exit poll has suggested that British Prime Minister Boris Johnson's Conservative Party will win a majority of 86 seats in the general election, giving him the numbers in parliament he needs to deliver Brexit on 31 January.
Here are the key dates ahead if an exit poll is confirmed when final results are published:
13 December: New government
If Boris Johnson has indeed secured a majority, he will head to Buckingham Palace to be formally re-appointed Prime Minister by Britain's Queen Elizabeth II.
17 December: Parliament resumes
Newly elected MPs will choose a speaker of the House of Commons, and are likely to reappoint Lindsay Hoyle, who was elected at the end of the last parliament, on 4 November. The 650 MPs are then sworn in.
19 December: Queen's Speech
If Boris Johnson's win is confirmed, he plans to move quickly to set out his government's legislative agenda, in the form of the Queen's Speech. The Queen will read out the list of bills he hopes to implement during a ceremony in the unelected upper House of Lords.
31 January: Brexit day
Britain is due to leave the European Union on 31 January, the fourth deadline since the 2016 referendum. A Boris Johnson win will see him seek to get the exit terms he has agreed with Brussels through parliament before this date, to ensure a smooth departure.
1 July: Trade talks deadline
If Brexit happens, Britain will enter a transition phase where its relationship with the EU will remain the same in practice until 31 December, 2020. This is intended to allow the two sides time to agree a new trade and security partnership. Britain can ask to extend the period for one or two years, but must inform the EU of its request by 1 July. After that, there will be no further opportunities to extend.
31 December, 2020: Transition ends
The date that existing relations between Britain and the EU are finally severed. Without a new deal, or an extension to the transition period, cross-Channel trade, transportation and a multitude of other ties risk being severely disrupted.
