Among those pledging to leave is Charlie Mullins, Britain’s richest plumber and founder of Pimlico Plumbers.

He announced this last month He put his £12 million penthouse in London up for sale and was moving abroad to avoid a raid on his finances.

Mr Vince was one of the first Labor donors to break ranks on tax; Other wealthy backers have remained silent on the issue so far.

These include South African businessman Gary Lubner and former Sainsbury chairman Lord Sainsbury.

But as well as criticizing those threatening to flee the country over the tax, the energy mogul also lashed out at Nimbys, particularly those protesting against it, over the Government’s implementation of net zero emissions. electric poles and overhead cables.

“People living in rural areas need to accept that this is a contribution to our country’s economy,” he said. “Some people aren’t used to it.”

Mr Vince, who is worth around £100 million, founded wind energy company Ecotricity in 1995 after connecting an old pylon to a wind-powered telephone in Glastonbury.

After leaving school at 15 and spending a decade on the road living in an old ambulance-turned-caravan, he is now regularly listed as one of Britain’s richest people.

As well as running Ecotricity, he is also the founder of lab-grown diamond company Skydiamond and vegan football club Forest Green Rovers.

When the late outspoken turkey breeder Bernard Matthews invited him to build a wind farm at his factory, Mr Vince refused, saying it was “a concentration camp”.