BLENHEIM Palace managers have promised the stately home will be ‘carbon negative' within five years.

The Oxfordshire UNESCO World Heritage Site’s ‘green’ manifesto is being championed by CEO Dominic Hare, who believes global warming is the single biggest threat to Blenheim’s long-term survival.

The stately home in Woodstock has issued a disturbing image of what the palace grounds could look like if nothing is done to tackle climate change.

Mr Hare said: "Climate change and the dangers it brings are self-evident. The real question now is what we can do to lessen its impact.

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“As a major legacy landowner, a multi-million-pound business and a world-renowned visitor attraction we have both a significant responsibility to help, and an opportunity to make a real difference.

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“All businesses will have to respond to climate change and make significant changes which reflect a full understanding of the price we extract from the planet each time we transact.”

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Mr Hare said by 2025 as part of achieving carbon negative status, the palace intends to have 50 per cent of its visitors arriving in a ‘carbon friendly' way.

It also aims to generate double the energy it consumes through renewable production.

Other plans include a network of cycle and pedestrian routes across its land.