A handout picture taken and released by environmental action group Greenpeace on August 3, 2023 shows Greenpeace activists on the roof of Britain's Prime Minister Rishi Sunak's manor house in Kirby Sigston, northern England, to protest at his backing for new oil and gas licences in the North Sea. (GREENPEACE UNITED KINGDOM / HANDOUT VIA AFP)

LONDON – Greenpeace protesters draped the private home of British Prime Minister Rishi Sunak in black fabric on Thursday, stepping up their campaign against his government's policy on drilling for oil.

Sunak's record on environmental issues has come under scrutiny in recent months after he said he would take a "proportionate approach" to climate change that balances net zero ambitions with the need to keep consumers' bills down.

That has drawn fury from climate protesters who have stepped up their campaigns, disrupting high-profile sporting events, classical music concerts and political speeches.

A poll released on Wednesday showed 67 percent of voters thought the government was handling environmental issues badly, the worst rating since mid-2019 when YouGov began tracking public opinion on the issue

In response, Sunak's ministers have introduced new laws to clamp down on "eco-mob" protester tactics including slow walking in busy roads and "locking-on" to buildings or infrastructure.

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Pictures posted online by Greenpeace UK on Thursday showed four protesters atop the property in Yorkshire, northern England, covering it in swathes of black fabric, while a banner read "RISHI SUNAK – OIL PROFITS OR OUR FUTURE?"

Around two hours later at 11:00 BST (1000 GMT), four protesters were still on the roof with a sign saying "NO NEW OIL."

Greenpeace said they were protesting the government's backing for new North Sea oil and gas licenses and a proposed development of Equinor's Rosebank oilfield, which is subject to a final investment decision.

"We desperately need our prime minister to be a climate leader, not a climate arsonist," Greenpeace UK said.

Sunak went on holiday to California on Wednesday. Police said they had contained the area and no one has entered the building.

A separate protest also took place outside Sunak's official Downing Street residence and office on Thursday.

Protesters from "Mothers Rise Up", a group of UK mums worried about the climate crisis holds placards as the demonstrate outside the entrance to Downing Street, official residence of the Britain's Prime Minister Rishi Sunak, in central London on August 3, 2023. (PHOTO / AFP)

Britain in 2019 set a 2050 net zero carbon emission target and was quick to build up its renewable energy capacity.

But the crisis in Ukraine has turned the spotlight on energy security, with the government on Monday committing to granting hundreds of licenses for North Sea oil and gas extraction as part of efforts to become more energy independent.

It also approved its first new deep coal mine in decades in December.

A poll released on Wednesday showed 67 percent of voters thought the government was handling environmental issues badly, the worst rating since mid-2019 when YouGov began tracking public opinion on the issue.

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Some in Sunak's Conservative party are alarmed over the prime minister's perceived backsliding over environmental commitments, with one minister, who quit in June, saying Sunak was uninterested in green issues.

Sunak defended his environmental record on Wednesday, saying Britain had done a better job than other major countries in cutting carbon emissions.