The prime minister and his chancellor, Rachel Reeves, are expected to argue that Brexit – backed by the Reform leader’s ‘easy sloganeering’ – is responsible for Budget tax hikes this autumn. But, says John Rentoul , the move could backfire spectacularly T his is such a bad idea that the obvious explanation is that one of Keir Starmer’s advisers had a bet with a colleague about the most absurd story that they could get into the press. The real reason, though, is probably that people in Downing