As talks continue between the UK and EU over Brexit, you may be wondering when the deadline is for agreeing a deal.
The Brexit referendum was decided back in June 2016 as the British people were asked to decide whether to Remain or Leave. They voted to Leave - by 52 per cent, compared to 48 per cent Remain.
Since then, there have been lengthy negotiations between officials from the UK and the European Union.
Agreement has yet to be reached.
Former Prime Minister Theresa May is the person responsible for triggering Article 51 which began the process.
The UK then entered into a year long transition period in 2020 - which was blighted by coronavirus.
The talks are being led by the EU's chief negotiator, Michel Barnier.
Current Prime Minister Boris Johnson told journalist on Friday that there's a deal to be done "if they want to do it" - referring to the EU.
But he noted that substantial and important differences remained between the two sides, which just over a month left to finalise a deal.
The deadline is December 31. This is when the UK has to leave the EU - with or without a deal.
The post-Brexit transition period ends in January 2021.
Boris Johnson said a trade agreement would benefit people "on both sides of the Channel", adding that the UK could "prosper mightily" without one.
"Everybody's working hard", he added. "But clearly there are substantial and important differences to be bridges, but we're getting on with it."
If no deal is reached, trading between the EU and UK will default to World Trade Organisation rules meaning tariffs will be introduced, and costs on products imported to the UK could rise.
Fishing has been a major block in the talks, along with post-Brexit competition rules and how any deal would be enforced.
The two sides have yet to agree common ground on how closely the UK should follow the European Union's social, labour and environmental standards following the transition.
The clock is ticking is one of the most popular phrases used when discussing Brexit.
