The sector is concerned by reports that there won’t be a cap on the levy that can be imposed by mayorsKemi Badenoch, the Conservative leader, has been doing an interview round this morning. She is keen to escalate her attack on Andy Burnham over his comment at PMQs yesterday that “we do everything to support our national security, but it can’t come at the expense of social security.”Burnham said that the Tory plan to raise defence spending by £10bn a year mostly by cutting welfare would