He said the Irish border backstop was the main sticking point, and called on Ministers to ensure "the continuation of tariff and friction free trade which is so important to the future of our economy". As part of the EU, Britain now enjoys the freedom of goods, services, money and people to move across borders with 27 other countries in the region.
There was talk of an open talk to oust May last week and Boris Johnson is very vocal in his criticism of the Chequers agreement.
Johnson quit in July over the Chequers plan.
As such, the public "must get a final say" on the issue, Khan insisted. One of the biggest problems is how to avoid a hard border between Ireland and Northern Ireland.
Brussels will reportedly accept that advances in scanning technology can be used to solve the deadlock on customs checks between Northern Ireland and the Republic.
"Once we take back control of our borders and "Vote Leave", we can have an immigration system that is fair to all and allows us to bring in the brightest and the best from across the world", she said.
But Labour MP and leader of Labour Leave said that the Mayor's call is an "attack on democracy".
A great deal of uncertainty remains about whether London and Brussels will be able to agree a new trade and relations deal, or whether Britain will crash out in a chaotic manner.
More diversity jokes than wins for people of color at the Emmys
Brosnahan used her acceptance speech to give a shout-out to her comedy's celebration of women power. It tied " Saturday Night Live " as the second most awarded program of the year in any genre.
Mrs May has been dogged by claims rebels in her party are seeking to depose in the next six months.
Meanwhile Environment Secretary Michael Gove told the BBC that Mrs May's Brexit proposal was "the right one for now".
Until recently, the Prime Minister had appeared to keep the possibility for preferential rights for European Union citizens open.
Requirements for a "backstop" arrangement at the Irish border, contained in December's agreement between Mrs May and European Commission president Jean-Claude Juncker, would leave the United Kingdom a "vassal state" of the EU, the former foreign secretary warned.
With just six months to go until the United Kingdom leaves the EU the IMF's Christine Lagarde says she "very much hopes and prays that there will be a deal between the European Union and the UK".
According to a Comres survey, 50% of British adults feel the overall impact will be negative, whereas 41% think it will be positive.
Britain has fallen behind other Group of Seven economies since the 2016 vote to leave the European Union, with business uncertainty holding back investment and a fall in the value of the pound slowing growth in incomes and consumption, the International Monetary Fund said.
When asked about the handling of Brexit negotiations, nearly 79% of people polled thought that the government had handled them badly, and 63% thought the European Union had handled them badly.
In the interview, to be fully aired as part of the BBC " s "Panorama' programme on Monday night in the United Kingdom, the premier also issues an ultimatum to critics who have questioned her strategy on Brexit.