LONDON (AP) — Britain’s government and opposition were clinging to hope today of finding a compromise Brexit deal, 48 hours before Prime Minister Theresa May must try to persuade European Union leaders to grant a delay to the U.K.’s departure from the bloc.

If the bloc refuses, Britain faces a sudden and chaotic departure on Friday, the Brexit deadline previously set by the EU.

May sought talks with the opposition Labour Party after Parliament three times voted down her divorce deal with the EU. Three days of negotiations last week failed to yield a breakthrough, with Labour saying the Conservative government had failed to offer concrete changes to its Brexit plan.

But May’s Downing Street office said the talks had shown “willingness to compromise on both sides.”

“We hope that there will be further formal discussion” with Labour later today, said May’s spokeswoman, Alison Donnelly.

May has asked the EU to delay Brexit until June 30, to give Britain’s divided politicians time to agree, approve and implement a withdrawal agreement. The bloc’s leaders are due to meet in Brussels Wednesday to consider the request.

An extension requires unanimous approval from the 27 remaining national leaders, some of whom are fed up with Brexit uncertainty and reluctant to prolong it further.

Downing Street said May would hold face-to-face talks with the French and German leaders before the EU summit, to lay out her reasons for seeking a Brexit delay.

She plans to fly to Berlin Tuesday to meet Chancellor Angela Merkel, then on to Paris for talks with President Emmanuel Macron.

Macron has been particularly resistant to the idea of further delay to Brexit, saying the EU can’t be held “hostage” to Britain’s political crisis.

British Foreign Secretary Jeremy Hunt said May “is totally and utterly determined to deliver Brexit.”

Hunt said of the other 27 EU leaders that “they want Brexit to be resolved as quickly as possible. So do we.”

But it’s unclear whether talks between the government and the left-of-center Labour Party will break the impasse that last left Britain uncertain how — or even whether– it will leave the EU.

Labour favors a softer Brexit than the government has proposed, including a close economic relationship with the bloc through a customs union.

Culture Secretary Jeremy Wright said today that both parties “must make sure we’re all prepared to compromise.”

“There’s some urgency to it, but I do think it’s important for everyone to take their responsibilities seriously, whatever party they come from, and try and get to a point where we leave the EU, as people have said they wish to do, and to do it on the best possible terms,” he told the BBC. “I think that’s achievable.”