Britain's Prime Minister Theresa May leaves 10 Downing Street in London, September 12, 2018.
The United Kingdom is due to leave the European Union on March 29 and yet little is clear: There is, so far, no full exit agreement and some rebels in May's Conservative Party have threatened to vote down a deal if she clinches one.
Speaking to BBC's Andrew Marr earlier today, he said: "Let me tell you the facts, which are that the police now are preparing for the possibility of civil unrest".
Mr Yu made his comments days after Bank of England Governor Mark Carney issued a warning over the economy and house prices in the case of a disorderly Brexit in a special cabinet meeting to discuss plans for a no deal scenario.
Khan said Britain was now facing either a bad deal or a no-deal Brexit, both of which were "incredibly risky".
"If Parliament was to say, "no, go back and get a better one", do we really think the European Union is going to give a better deal at that point?" said Mrs May.
The United Kingdom and European Union may still be far apart, but there's movement - enough for currency traders to push the pound higher.
But many business chiefs and investors fear politics could scupper an agreement, thrusting the world's fifth largest economy into a "no-deal" Brexit that they say would weaken the West, spook financial markets and block the arteries of trade.
Meanwhile, a "hard Brexit" Conservative faction says leaving without a deal is preferable to May's proposed terms because it would leave Britain free to strike new trade deals around the world.
Wilmington cut off from North Carolina by Florence flooding
As authorities rescued people by boat and even airlifted 50 stranded people in North Carolina, there were also reports of looting. Residents across North Carolina are still struggling to rebuild after devastating flooding during Hurricane Matthew in 2016.
International Monetary Fund (IMF) managing director Christine Lagarde attends a press conference to mark the publication of the 2018 Article IV assessment of the United Kingdom at the Treasury in central London, Monday Sept. 17, 2018.
"I very much hope and pray that there will be a deal between the European Union and the United Kingdom", she told reporters.
British finance minister Philip Hammond, speaking alongside Lagarde, said the government had to heed the "clear warnings" from the International Monetary Fund of a no-deal Brexit.
"It's time to take this crucial issue out of the hands of the politicians and return it to the people so that they can take back control", the mayor said.
"The unfortunate reality is that Theresa May has failed to negotiate a Brexit position with her own party - let alone agree a deal with the EU".
Former Foreign Minister Boris Johnson used a newspaper column yesterday to urge his fellow Brexiteers to shoot down Prime Minister Theresa May's plan rather than try to oust her altogether.
But last night it was reported that Brussels was preparing to accept a frictionless Irish border using new technology to minimise checks.
Mr Gove's call came as Boris Johnson said: 'We are heading full throttle for the ditch with a total write-off of Brexit'.