Green Party leader Zack Polanski has shot from zero to hard-left hero in a matter of months.

10:40, Mon, May 4, 2026 Updated: 10:45, Mon, May 4, 2026

Zack-Polanski-terrifying

Green Party leader Zack Polanski is driving his followers wild, and that's worrying (Image: Getty)

Mad Zack is exactly the kind of figure who emerges in periods of political volatility. Slick, glib, opportunistic, with that unmistakable glint in his eyes. He's an attention seeker, who's suddenly getting all the attention he could ever want. When the political landscape shifts, chancers like this seize their moment. He's already upended British politics and he's only just getting started.

Keir Starmer knows it. Polanski is a knife in the heart of the Labour Party, and now he’s twisting it. He may be a vegan, but he’s serving raw red meat to left-wing activists, with a radical policy menu beyond their wildest dreams. While much of the country is furious at Starmer for pursuing the most left-wing agenda in our history, Labour’s grassroots think he’s an establishment sellout. They want more tax, more spending, more borrowing even if it triggers a bond market meltdown. Thanks to Polanski, Labour will feel obliged to turn left. Probably under a new leader.

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Staying out of the Iran conflict isn’t enough for the Greens. The only country they want to punish is Israel. Starmer isn't giving them what they want. Polanski is.

I feel sorry for long-term Green Party members, who simply wanted to save planet earth. Now they're urgently warning us against Mad Zack, but too late.

Since September, party membership has surged from 68,000 to more than 200,000, making it the third-largest party by membership. But this is not a new movement. It's a recycled one. They’re the same hard-left cranks and activists who flooded into Labour under leftie hero Jeremy Corbyn.

It's the usual placard waving, pink hair rattle, but angrier than ever. They're angry about the wealthy. About landlords. About gender politics. And they’re really, really angry about Israel. Many can't stop themselves, and tip into outright antisemitism. It's an absolutely terrifying time for our country.

Starmer tried to purge this faction from Labour. Now they’re plotting their revenge. Labour aren't worried about Nigel Farage anymore. Zack is the man who terrifies them. He should terrify the rest of us too.

Polanski isn't constrained by power. He doesn’t have to govern, so he can escalate. He feels free to slight two unarmed police officers who put their lives on the line tackling a knife-wielding fanatic in Golders Green, knowing his base will love him for it.

Why hold back? We live in divisive times, and being divisive is working out very nicely for him.

The Green Party's political programme is insane. Pull out of Nato, nuclear disarmament, make friends with Vladimir Putin, throw open UK borders, ban North Sea drilling, legalise drugs, rejoin the EU, launch a universal basic income and nationalise everything in sight.

Even a sniff of that agenda would push the UK to the brink, and trigger an outright bond market crisis.

Polanski doesn’t need to become PM to upend the country. Labour will join him in a madcap race to the hard left. Polanski is driving the UK towards a cliff, and loving every minute of it.