Energy bills soaring to £4,000 a year, costing an average household £500 in January alone, would plunge more than half the country into fuel poverty.
The warning must wake up the Government to the depth of the problem when both Conservative contenders, Liz Truss and Rishi Sunak aren’t up to the job.
Unfunded tax plans by Foreign Secretary Truss are too across-the-board, giving a large slice to wealthier homes instead of targeting help to lower and middle income families, while ex-Chancellor Sunak lacks credibility after making up offers as he goes along.