BRITAIN should consider leaving Nato and expel US military forces from British bases, Green Party leader Zack Polanski has said.

Arguing for a “genuine strategic defence review” and the dissolution of a military alliance between Britain and the US, Mr Polanski insisted the government should be spending less on US weapons.

“I think it’s pretty worrying that we’ve allowed ourselves to become so reliant on American interests, and that a lot of this depends on if Donald Trump is in a good mood or not,” he said.

Mr Polanski was speaking to the Guardian’s Politics Weekly podcast as Prime Minister Sir Keir Starmer pleaded with US President Donald Trump over the latter’s threats to invade Greenland.

Mr Trump has said he will slap tariffs on countries that oppose him, as Sir Keir responded that “calm discussion” and a “pragmatic” approach should prevail.

Calling for Britain to wean itself off its reliance on the US military, the Green party leader said he supported leaving Nato, despite this not being an official policy of his party.

He said: “Donald Trump has so much domination within Nato that I don’t believe it’s possible to reform Nato from within.

“We should be reviewing US bases on UK soil, and actually looking at a genuine strategic defence review.”

When asked if he believed the US to be a greater threat than Russia, Mr Polanski answered: “I do think Donald Trump is dangerous. I think Vladimir Putin has clearly done more.

“But then we can talk about Donald Trump’s complicity or active enabling of [Benjamin] Netanyahu and the genocide in Gaza. None of these things are OK and I think it’s not about comparing things.”

Mr Polanski also called for Britain to give up its nuclear weapons, saying: “If we’re not willing to have conversations about peace and diplomacy – that part of those conversations look at everyone denuclearising – then what are we doing here?”

Defending his proposals for a 1 per cent wealth tax on assets of £10 million or more, and 2 per cent on those of £1 billion or more, he added: “We need to make sure that the people we are reliant on are reliable allies, and Donald Trump is certainly not that.”