What is really going on in politics? Get our daily email briefing straight to your inbox Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Labour MPs are drawing up a plan to reverse Brexit AFTER we have left the EU – if Jeremy Corbyn fails in his bid to lead a national unity government.

A unity coalition of anti-Brexit politicians would need to be formed by early September to have any hope of stopping PM Boris Johnson crashing the UK out of the EU without a deal on October 31.

But a senior Labour MP said: “ Brexit has torn up the constitutional rulebook.

So just because something is done it doesn’t mean it can’t be undone.

“So once Article 50 is ­triggered we can pass ­legislation to untrigger it.”

(Image: Getty)

To reverse Article 50 – the legal mechanism by which the UK leaves the EU – would also need EU approval.

But constitution expert Professor Vernon Bogdanor of King’s College London said: “The EU gets around a treaty when it wants to. And the British parliament is sovereign so it can pass retrospective legislation.”

Mr Corbyn has proposed himself as caretaker PM while MPs pass laws to block no deal and hold an election – and so far several senior Tory Remainers have agreed to hold talks with the Labour leader.

Lib Dem leader Jo Swinson said she would meet Mr Corbyn but ruled him out as a PM. She wants either Tory Ken Clarke or Labour’s Harriet Harman.