Theresa May has urged MPs to back her plans or face the prospect of "no Brexit at all" before heading to Brussels for talks with Jean-Claude Juncker, president of the European Commission.

Tory MPs lined up to demand the prime minister renegotiate parts of her Brexit deal during a fiery prime minister's questions session, where Ms May sought to sell the plan to her divided party.

Earlier, senior Tories including Amber Rudd and Damian Collins opened the door to a new referendum, as the prime ministers hopes of securing a parliamentary majority appeared to fade.

It also comes amid suggestions from Brussels that a summit to sign off on the draft withdrawal agreement on Sunday could be called off unless progress is made on finalising a political declaration on future relations.