“Fruitcakes and loons”. That is how David Cameron described the United Kingdom Independence Party, when he became Prime Minster in 2010. That could prove to be a dreadful strategic mistake, as he prepares for the next General election, in 2015. Unfortunately for Mr Cameron, the fruitcakes are on the rise. By labelling UKIP also as “closet racists” Mr Cameron is in danger of insulting millions of small “c” Conservatives who …