Mr Corbyn moved to block Brexit by calling on the next Tory leader to hold a second referendum before taking the UK out of the EU. And he said Labour would campaign for Remain despite millions of the party’s voters backing Brexit.
Brexit Party MEP Lucy Harris warned that Mr Corbyn has betrayed Labour’s Leave voters.
The MEP for Yorkshire and the Humber said: “Labour has put the final nail in the coffin for any chance of it sticking up for their traditional working class.
“They have made it clear who their priority is, and that is the inner-city privileged who wish to overturn the democratic vote of millions across the UK.
“The party has deserted North Shields in favour of North Hampstead.
“Fortunately the Brexit Party is ready and willing to step into the vacuum left by Corbyn.”
Mr Corbyn announced the bombshell move earlier today after mounting criticism over his unclear Brexit stance.
But he did not confirm what Labour’s position would be if a snap general election put him in power.
In a letter to party members, Mr Corbyn said: “Whoever becomes the new prime minister should have the confidence to put their deal, or no deal, back to the people in a public vote.
“In those circumstances, I want to make it clear that Labour would campaign for Remain against either no deal or a Tory deal that does not protect the economy and jobs.”
Brexit Party leader Nigel Farage also slammed Mr Corbyn, tweeting: “Typical Jeremy Corbyn with a mixed message, the truth is that he has lost the internal battle and that Labour is now a Remain party.”
Mr Corbyn has been facing increasing pressure to shift to Remain despite fears it would wipe out support for Labour in Leave constituencies.