JEREMY CORBYN will today call on fellow Labour leadership candidates to join him at the People’s Assembly march against austerity.

The leftwinger will take part in Labour’s first official hustings this morning before rushing back to London to join the demonstration.

The debate in Stevenage, a target seat lost to the Tories at last month’s general election, will see him go head-to-head with Andy Burnham, Yvette Cooper and Liz Kendall.

The Islington MP is so far the only leadership hopeful who has said he will join the huge march starting in the City of London.

But the left candidate will use the debate to challenge his rivals to join him — and has even offered to escort them on the 30-minute train journey to London.

Speaking to the Star ahead of the march, he said: “I think they should all come.

“I’m happy to go down with them on the train together. I’ll say in the meeting: ‘Come on, let’s go’.”

More than 700 people have signed-up to join the dedicated Labour members block on today’s demonstration.

People’s Assembly national secretary Sam Fairbairn said: “There’ll be a huge number of Labour members on today’s march.

“I think if they want to engage with their party’s grassroots and stay true to the party’s founding principles, that leadership candidates should be there.”

Rather than joining the demonstration, shadow chancellor Chris Leslie spoke yesterday at the London Stock Exchange.

Ms Leslie told a business conference that Labour would take a “less dogmatic” approach to austerity, but said the party should “not kid ourselves” about the supposed need to make cuts.

Mr Corbyn will argue though that “austerity is not inevitable” when he addresses the demonstration’s final rally in Parliament Square.

“You can’t cut your way to prosperity,” he will say.

“Osborne talks about winning the global race, but his is a race to the bottom. The prospect of there being more poverty, more inequality and more homelessness in five years time is a miserable vision.”