PRIME Minister Rishi Sunak’s “flip-flopping” on commitments to protect the environment could backfire badly at the next general election, suggests a poll of voters in “blue wall” marginal seats who said they wanted stronger measures.

In the survey by environmental campaign group Greenpeace, 20,000 people — 70 per cent in parliamentary constituencies in the south and south-east of England — said that environmental issues would affect how they voted in the election.

Eighty-five per cent said they wanted more government financial support for home insulation and 73 per cent wanted more funding for heat pumps.