An MP has described changes to the way disability payments are calculated as a “tax” on the vulnerable. Mike Martin, the newly elected member for Tunbridge Wells, has written to Kent County Council (KCC) expressing concerns about the increase in costs to many. The Liberal Democrat has appealed to KCC’s cabinet member for adult social care, Cllr Dan Watkins, to “urgently reconsider” the changes which came into force on September 2. The council, under severe financial strain due to squeezed budgets and soaring bills, believes it can save around £4million. In a letter dated September 9, Mr Martin…