Andy Burnham was last night warned against reviving his 'nightmare' plan for a 'death tax' to pay for social care.The Prime Minister has long favoured a 10 per cent levy on all inheritances and yesterday said he wants cross-party agreement on resolving the care crisis.Kemi Badenoch said she is willing to work with Mr Burnham on the issue but the Tory leader warned that any solution must be funded by spending cuts, not costly new taxes.Reform UK's Treasury spokesman Robert Jenrick said the so-called 'social care levy' would result in the number of families paying tax on inheritances rising twentyfold. Writing in the Daily Mail, he said the plan would 'rob' hundreds of thousands of pensioners each year.'This universal levy would hit the tiny bungalow and the ex-council flat just as hard as a great country pile,' he said. 'It's every pensioner's worst nightmare.'Mr Jenrick said Labour had no mandate for the idea – which was not in the party's election manifesto – and warned the PM had a duty to call a general election if he wanted to force it through.But Mr Burnham yesterday said he believed he could push through 'major changes' before the next election, which must be held by August 2029.