Andy Burnham is likely to spark fury when he tells MPs on Monday that it would be a โ€œdereliction of dutyโ€ not to seek a new deal with the EU. The Prime Minister is expected to reiterate his argument from the Labour Party conference that Brexit has done โ€œmore harm than goodโ€ during a Commons address on Monday. He will call on all parties to support the Governmentโ€™s approach in seeking a closer relationship with the EU, arguing that such a move could help control immigration and boost growth.

A No 10 source said: โ€œAndy understands why some politicians donโ€™t want to face up to the reality that Brexit has not delivered what they once promised. But it is time for a different conversation about what our long-term relationship should be.

โ€œSticking with the status quo and not working relentlessly to secure a good deal that boosts growth would be a major dereliction of duty.โ€

At the Labour conference in Liverpool last month, Mr Burnham said he would set out the โ€œoptionsโ€ for Britainโ€™s long-term relationship with Europe around the time of a UK-EU summit planned for the end of the year. He has suggested that those options could include rejoining the bloc.

Mr Burnham is likely to be grilled on his comments that the UK is โ€œclearโ€ there was Russian interference in the Brexit referendum.

He said that when he entered No 10 in the summer, he had asked whether Moscow interfered in the 2016 vote on whether to leave the EU and was given โ€œthe clear answer that yes there wasโ€.

The Prime Minister said he believes it is important to put this โ€œclearly on the recordโ€ to help voters in Germany and France understand โ€œsome of this politics is instigated via our enemiesโ€, amid the rise of far-right parties in those countries.

Parliamentโ€™s Intelligence and Security Committee found in 2020 that the Government failed to fully assess the impact Russian state-run media and โ€œtrollโ€ accounts could have had on the EU referendum.

Mr Burnham, speaking to the Rest Is Politics podcast to be released on Monday, said he spoke to German Chancellor Friedrich Merz about the threat from the far-right Alternative for Germany (AfD) party when they met in Berlin this week.