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Londoners are saying an emphatic “no” to Theresa May’s Brexit deal, with seven out of 10 saying they would rather stay in the European Union.

The exclusive poll also found that nearly half of Londoners want a second referendum to be called, the strongest support yet, with 47 per cent in favour and just 29 per cent against.

The findings by YouGov, with research commissioned by Queen Mary University of London, suggest a big shift from the referendum in 2016 when the capital divided 60-40 for staying in the EU.

With Mrs May’s deal on the ballot paper in the sort of confirmatory vote being pressed for by 150 Labour MPs and some Conservatives, Remain would triumph by a clear 71-29 divide.

Londoners also reject the idea of crashing out of the EU without a deal, an option pressed by Nigel Farage and some Tory Brexiteers.

Given the choice of leaving on Mrs May’s terms or with no deal, Mrs May’s deal is ahead by 38 per cent to 21 per cent, but with a large number of don’t knows and non-voters.

Mrs May’s thrice-rejected deal has barely gained any support since she first tried to put it to a vote in Parliament. The capital city is currently 42 to 17 against it, compared with 45 to 23 against in December.

Prof Tim Bale, deputy director of the university’s Mile End Institute, said: “We’re used to thinking of London as a bastion for Remain, but it looks like the Government’s failure to get us out of the EU on a basis that Parliament can agree on has only strengthened feeling in the capital.”

He added: “There certainly doesn’t seem to be an awful lot of support now for Jeremy Corbyn’s fence-sitting on Brexit in a city that’s supposed to be a Labour stronghold.”