Johnson says May's Brexit deal is 'dead' and she should still step aside even if it is defeated.

Boris Johnson today branded Theresa May's Brexit deal 'dead' - less than 24 hours after he sensationally backed it - and he will now urge the Prime Minister to quit rather than fight on.

The Prime Minister yesterday agreed to demands from Brexiteers, including her former Foreign Secretary Mr Johnson, that she step down in return for their support for her Brexit plan that must pass by Friday if the UK is to leave the EU by May 22. 

But it may all have been in vain for Mrs May because the DUP refused to fall in behind the Prime Minister last night, and if they can not be brought onside in the coming hours the country will plunge into further chaos.

And Boris, who threw himself behind the Prime Minister’s Withdrawal Agreement despite repeatedly trashing it as 'an appalling humiliation' and a 'historic mistake', has now told friends the deal 'is dead anyway', according to the Evening Standard. 

Mrs May said yesterday she would quit when she delivers Brexit - but with a general election or a long Brexit extension now the most likely outcome Mr Johnson is set to demand she honours her commitment to go even if her deal fails. 

Despite the result being on a knife-edge, Commons Leader Andrea Leadsom has this afternoon confirmed a third vote on her deal will be brought forward by the Government for tomorrow, which was meant to be Brexit day.

MailOnline