Backbench Bill could result in no-deal Brexit by accident, ministers warn

"I think the European Union would give us an extension", he said.

The proposal for any Brexit deal to be put to public vote in a "confirmatory referendum" was backed by opposition parties, plus some of May's Conservatives.

"If passed. this bill would place a severe constraint on the government's ability to negotiate an extension", May's spokesman said.

It comes on the same day she met the leader of the Labour party, Jeremy Corbyn, and Scotland's First Minister Nicola Sturgeon.

"I am offering to sit down with the leader of the opposition and to try to agree a plan that we would both stick to ensure that we leave the European Union and that we do so with a deal".

One alternative is to force her to accept a much longer extension that could give Britain time to rethink Brexit and possibly reverse its decision to leave.

"We will need a further extension to Article 50, one that is as short as possible, and which ends when we pass a deal". She has repeatedly said she did not want an extension which would see Britain having to take part in elections to the European Parliament on May 23.

The other is to let Britain go without a deal on April 12 in the hope that the economic disruption is short-lived and worth the price of eliminating long-term Brexit uncertainties.

It came as Brexiteer Tories circulated a draft parliamentary motion calling for the Prime Minister and members of her cabinet to be censured and have their pay docked for not delivering Brexit on time.

As Labour debated whether to push for another referendum, May came under sustained criticism from her own party over the decision to enter into talks with Corbyn.

May has infuriated more than 100 of her Conservative Party legislators by turning to Corbyn and the Labour Party for key votes in Parliament just days before the country is due to leave the European Union.

The Commons may still be able to put forward the version of Brexit it supports, as the PM has promised to grant more indicative votes if the talks between her and Corbyn fail to lead to a breakthrough.

Speaking on BBC Radio Scotland's Good Morning Scotland programme on Thursday, Mr Russell said: "Jeremy Corbyn said last night he was surprised that the Prime Minister hadn't given more, I'm not surprised".

"There hasn't been as much change as I expected", Corbyn, 69, said.

On Wednesday, European Commission President Jean-Claude Juncker said Parliament must back the exit deal with a "viable majority" by April 12 for May to get the short delay that she wants until May 22.

Alastair Campbell, who has campaigned for a second referendum on any Brexit deal, has said that the Labour leader is aware that talks with Theresa May are "an obvious trap".

May's government has previously rejected the customs union idea because it would block Britain from striking its own independent trade agreements with global powers such as China and the United States.

The parliament approved the measure by 502 votes to 81, with 29 abstentions, paving the way for millions of British holidaymakers to flock to the beaches of the Mediterranean this summer regardless of the outcome of Brexit.

Cooper introduced legislation, which Parliament is set to consider, this week, that would compel May to seek to extend the Brexit process beyond April 12 in order to prevent a no-deal departure.

European leaders will continue deciding how to respond to Brexit, with Ireland's prime minister, Leo Varadkar, hosting German Chancellor Angela Merkel in Dublin later.

To achieve a suprapartisan agreement and secure the approval of a majority of voters in the House of Commons, it is indispensable for May to abandon maneuvers for party interests and make a compromise.