It said it “wants action in three areas”, calling for the renewal of nature, more action on net zero targets and legally targets on the number of heritage sites.

But hitting out at the National Trust, Lee Anderson told GB News: “Brits expect the National Trust to protect our heritage, not lecture them on net zero.

“But Hilary McGrady is right to say we need long-term strategies, not short-term politics like Sir Keir Starmer’s Labour Party.

“I look forward to seeing her endorse this Conservative government as we take the long-term decisions for a brighter future.”

The National Trust’s Director-General Hilary McGrady demanded the Government introduce policies to reach net zero by 2050 and reverse the decline of nature by 2030.

This came just months after Sunak revealed that the Conservative Government will be watering down the UK’s policies to reach net zero.

Addressing the Civil Society Summit in central London, to an audience of faith, charity and community leaders, Starmer will say: “The Tories seem set on sabotaging civil society to save their own skins.

“They got themselves so tangled up in culture wars of their own making, that instead of working with the Royal National Lifeboat Institution – an organisation the late Queen was patron of for 70 years – to find real solutions to stop the small boats, their rhetoric has helped demonise them.

“Instead of working with the National Trust so more people can learn about – and celebrate – our culture and our history, they’ve managed to demean their work. In its desperation to cling on to power, at all costs. The Tory Party is trying to find woke agendas in the very civic institutions they once regarded with respect.

“Let me tell you, waging a war on the proud spirit of service in this country isn’t leadership. It’s desperate. It’s divisive. It’s damaging. It comes to something when the Tories are at war with the National Trust. That’s what happens when politics of self-preservation prevail over commitment to service.”

Starmer is also expected to use his speech to say a Labour government would create a “society of service”, with “a new focus on those who build the bonds that connect us, the communities that nurture us, the institutions that support families and provide a bridge between the state and the market”.

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He adds: “In a society of service, doing the right thing will be rewarded. Working hard will pay off for people. And building caring, compassionate communities will make our country stronger, more prosperous, fairer for everyone.”

The Tories reacted by accusing Labour of “sniping from the sidelines without putting forward any serious plan”.

Later this week, Sir Keir will tour the country to talk to people about his plan to make Britain’s streets safe.

In recent years, the National Trust has faced growing anger over a series of decisions that have prompted claims it is following a “woke agenda”.

But hitting back at Starmer’s upcoming speech, Conservative Party Chairman, Richard Holden said: “Once again Labour are sniping from the sidelines without putting forward any serious plan. Keir Starmer cannot say what he would do differently because he has no plan.

“Starmer campaigned twice to make Jeremy Corbyn Prime Minister, a man who wanted to abolish our Armed Forces and who refused to sing the national anthem.

“Rishi Sunak and the Conservatives are delivering the long-term change our country needs by sticking to the plan that is working, building a brighter future for everyone. Sir Keir Starmer and the Labour Party would take us back to square one.”