The new leader of the Green Party has revealed he spoke to Jeremy Corbyn this week amid suggestions there could be a pact between their two parties. 

Zack Polanski, who comfortably beat his rivals Adrian Ramsay and Ellie Chowns to win the Green Party’s leadership election, told the Politics Hub with Sophy Ridge that he spoke to the former Labour leader on Monday.

There have been suggestions that the Greens could join forces with Mr Corbyn’s new party – which does not yet have a formal name – to avoid splitting the vote on the left.

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The question of a future potential pact with Mr Corbyn and his co-leader, the independent MP Zarah Sultana, became an issue in the Green Party’s leadership election, with Mr Polanski more keen on the idea than his co-leadership rivals.

Mr Polanski, who secured 20,411 votes – comfortably beating the 3,705 votes cast for the joint leadership bid of Mr Ramsay and Dr Chowns – praised Mr Corbyn for holding his own inquiry into the government’s conduct in Gaza, which will begin later this week.

The former Labour leader had tabled a private members’ bill calling for an independent public inquiry into the UK’s involvement in Israeli military operations in Gaza, but it did not progress in the House of Commons.

Speaking to the Politics Hub with Sophy Ridge, Mr Polanski said: “I spoke to him [Mr Corbyn] briefly yesterday.”

He said Mr Corbyn’s inquiry was “the exact kind of example where even if someone is from a different party, but I’m absolutely aligned with what they’re doing, then I’ll always call out what I think is good for this country and good for our global politics”.

My Corbyn congratulated Mr Polanski for his “stunning victory” after the results were announced, and added: “Your campaign took on the rich and powerful, stood up for the dignity of all marginalised communities, and gave people hope! Real change is coming. I look forward to working with you to create a fairer, kinder world.”

Mr Polanski, who is currently serving as deputy leader, won the election on a platform of “eco-populism”, which he says will make the Greens a real alternative to Labour and Reform UK.

The London Assembly member, who is not an MP, will now become the party’s only leader, after Bristol MP Carla Denyer stepped down from her joint role with Mr Ramsay, triggering the contest.

While Mr Polanski has strongly criticised the policies of Nigel Farage, he has acknowledged his cut-through with voters, and has argued that the Green Party needs to offer a bolder message to voters, in the guise of wealth taxes and net zero policies.

The new Green leader also weighed into the debate about flying the St George’s Cross, after the prime minister Sir Keir Starmer said he had one in his office – while also cautioning against the flag being used as a political statement.

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Asked what he thought of the St George’s Cross, Mr Polanski said: “I think that migration is at the heart of this country. Migrants contribute a huge amount. That’s not a new thing – that has been traditionally throughout our history and that the English flag means different things to different people.

“And I think if people want to wave it because they’re being patriotic, particularly at football tournaments, I think there’s a huge space for patriotism in this country.

“But I’m also aware that for lots of people who have arrived in this country or people who aren’t even migrants, to be frank, Black and Asian communities, the flag can mean very different things around colonialism and empire. And that’s the thing about flags. It means different things to different people.”

He said he believed the idea of flying the English flag outside homes not in the context of sport was “quite imported from America”.

“If people want to do that then I think that’s up to people what they want to do.

“But I think at times of heightened tensions, I would say patriotism is actually about loving your neighbour, whether they’re from this country or not.”