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The Labour party will attempt to block no-deal and back a second referendum to "prevent a damaging Tory Brexit", Jeremy Corbyn will say today.

The leader is due to announce the move at a a meeting of the Parliamentary Labour Party, saying that he will do "everything" in his power to prevent Britain crashing out of the European Union without a deal.

Labour will also back the Cooper-Letwin amendment to take no deal off the table, a statement said on Monday.

The move will be two-pronged as the party will first seek to enshrine Labour's five Brexit demands in law by tabling an amendment to the Government's Brexit motion which is set to be debated on Wednesday.

The demands include a permanent and comprehensive customs union with the EU and close alignment with the single market, as well as a dynamic alignment on rights and protections and commitments on participation in EU agencies and funding programmes.

However, if that vote is lost, Labour will then support a second referendum.

Speaking to Channel 4's Krishnan Guru-Murthy, Shadow Foreign Secretary Emily Thornberry said that Labour will back a deal or Remain referendum.

She said that the party will campaign to remain in the Eu if its alternative Brexit plan is rejected.

Mr Corbyn will tell his MPs on Monday night: "The Prime Minister is recklessly running down the clock, in an attempt to force MPs to choose between her botched deal and a disastrous No Deal. We cannot and will not accept.

"Last week, after our visit to talk to EU officials and leaders in Brussels and Madrid, no one can be in any doubt Labour's alternative Brexit plan is serious and credible.

"We are convinced our alternative, which puts jobs and living standards first, could command support in the House of Commons, bring people who voted Leave and Remain together, and be negotiated with the EU.

"That's why we will be putting down an amendment in parliament this week setting out Labour's plan: for a comprehensive customs union with a UK say; close alignment with the single market; guarantees on rights and standards; protection for Britain's role in EU agencies; and a security agreement which guarantees access to the European arrest warrant and vital shared databases. And we will be calling for legislation to underpin this mandate.

"We will also be backing the Cooper-Letwin amendment to rule out a No Deal outcome. One way or another, we will do everything in our power to prevent No Deal and oppose a damaging Tory Brexit based on Theresa May's overwhelmingly rejected deal.

"That's why, in line with our conference policy, we are committed to also putting forward or supporting an amendment in favour of a public vote to prevent a damaging Tory Brexit being forced on the country."

Writing on Twitter after the announcement, Shadow Brexit Secretary Keir Starmer said: "This week Labour will put its alternative plan for a vote in the House of Commons.

"If Parliament rejects our plan, then Labour will deliver on the promise we made at our annual conference and support a public vote."

David Lammy, Labour MP for Tottenham and supporter of the People’s Vote campaign for a second referendum, welcomed the move and said that the party is now “signalling that it will accept the principle of giving the public the final say on Brexit”.

He said: “Even if the MPs can agree some sort of deal, t would be wrong to force it on the British people when we now know so many of the promises made in 2016 have been broken and any deal will be worse than the one we’ve already got inside the EU.

"These are dangerous times for the Labour Party and our country. Jeremy Corbyn is today taking the first step to reunite our party by showing he is listening to our voters and members on this, the biggest issue of our time.

"But it is also crucial when food prices are already rising and car manufacturers are scrapping investment that we provide the clarity needed to plan for the future."

Mayor of London Sadiq Khan added: "I welcome Jeremy Corbyn's move tonight to commit to putting forward, or supporting, an amendment in favour of a public vote.

"It is the right decision for London - and for the whole country - to give the public their say for the first time on a final Brexit deal.

"I hope Members of Parliament will support this move, which is vital to protect jobs and growth. The Prime Minister must now withdraw Article 50 to prevent Britain crashing out of the EU without a deal within weeks and to give us time to sort out her mess."