D-DAY for a final Brexit deal could be pushed back until November rather than the scheduled meeting next month as leaders scramble to come up with a concrete agreement.

Prime Minister Theresa May has urged European leaders to compromise on their Brexit stance as they prepare for crunch talks to be held tomorrow.

Brexit Secretary Dominic Raab insisted that Britain had made enough “compromises” and that they should be “matched on the EU side.”

Ms May will make a direct pitch to fellow leaders at the gathering in Salzburg, Austria, calling on them to back her Chequers plan — a plan that has led to some of her Cabinet ministers resigning.

She is expected to briefly set out her position to her 27 EU counterparts which they will consider in her absence tomorrow.

European Council president Donald Tusk said he wanted to avoid the “catastrophe” of a no-deal Brexit. Ms May has threatened a no-deal scenario if her Chequers plan is not supported.

The deal has to be finalised well in advance of Britain’s March 29 2019 exit from the bloc so the parliaments in Westminster and Strasbourg can sign off on the agreement.