The mayoral share of the council tax bill will triple this year to fund new bus services – despite opposition councillors saying devolution should not be a “new excuse to tax local people”. The decision will mean people in a Band D household will pay £36 a year to the Cambridgeshire and Peterborough Combined Authority – up from £12 last year, when the precept was introduced. And the decision – approved by a majority of board members – came the day after the government issued a formal notice raising concerns about the authority. Dr Nik Johnson, the Labour mayor of Cambridgeshire and Peterboroug…