Since the UK voted to leave the European Union, speculation on when Britain will officially begin the process of Brexit.
Article 50 is the mechanism that allows any member state to trigger the formal negotiation process in order for them to exit the EU.
Theresa May created a new government department to help Britain the European Union but has yet to formally state when the mechanism will be enacted.
Until then the UK cannot negotiate any trade deals with the rest of the union and will not officially leave until exactly two years after it is triggered.
Despite the uncertainty, several leading politicians have speculated on when they think - or hope - Ms May might pull the trigger.
Yanis Varoufakis
The former Greek finance minister has said Article 50 must be triggered immediately in order to “create space and time during which to prepare yourself as a nation and a government”.
He said the UK needed to have a “robust debate” about what it actually meant because the discussion prior to the referendum had been of a “very low quality”.
Martin McGuinness
Northern Ireland’s Deputy First Minister Martin McGuinness has said Ms May had told him Article 50 will be triggered “early next year”.
Speaking at a fringe event of the Labour party conference in Liverpool, the Sinn Fein politician said: “I asked her about when she will trigger Article 50 of the Lisbon Treaty [and she said] that she was going to do it not this year but very early next year.
“So we are working on the basis that early next year, the article will be triggered.”
Donald Tusk
European Council President Donald Tusk has also said Ms May told him she planned to start the process early in 2017.
He said: “Prime Minister May was very open and honest with me.
“She declared that it's almost impossible to trigger Article 50 this year, but it's quite likely that they will be ready maybe in January, maybe in February, next year.”
Mr Tusk said Britain’s vote to leave was “sad moment” for Europe but reconfirmed the EU view that Brexit negotiations must favour the interests of the remaining members, not the departing country.
Boris Johnson
The Foreign Secretary has joined the consensus that Article 50 will be triggered in early 2017 but he claimed it would take less than two years to negotiate an exit.
He said: “By the early part of next year, you will see an Article 50 letter which we will invoke and, in that letter, I am sure we will be setting out some parameters for how we propose to take this forward.
“You invoke Article 50 in the early part of next year [and] you have two years to pull it off. I don't actually think you need to spend the full two years, but let’s see how we go.”
The MP dismissed fears that Britain will suffer during the negotiations as the EU offers harsh terms to stop other countries contemplating an exit.
He said they would “benefit from fantastic opportunities for free trade with our friends in the EU”.
Meanwhile, at a recent summit about potential trade deals with Turkey, Mr Johnson expressed relief that the subject of a poem he wrote claiming the Turkish president had sex with goats didn’t come up.
Whitehall
Ministers have reportedly held secret discussions about delaying triggering Article 50 until autumn 2017 after civil servants warned they were not prepared.
The new departments for Exiting the European Union and International Trade have been frantically recruiting staff to be able to start negotiations with the EU but they reportedly “don’t have the infrastructure they need to hire”.
Theresa May
Ms May herself has remained tight lipped about when she is likely to pull the trigger despite most sources close to the Cabinet saying it is likely to be in early 2017.
At the end of August, she held a meeting with her Cabinet at Chequers where she reportedly laid out plan for the next steps for Brexit.
She reportedly said she would trigger Article 50 without seeking the backing of Parliament.
