By Jennifer Sieg The founder of Pimlico Plumbers has turned his back on London with a parting shot at the new Labour government. London-native Charlie Mullins, who has now become a permanent resident in Marbella, Spain, said in an interview with the Sunday Times that he plans to sell his £10m apartment overlooking the Shard and the London Eye. His departure comes amid a growing pipeline of speculation over what tax rules the new Labour government will reveal forthe wealthy in October’s budget. “I honestly do not want to sell it — it’s the best place I’ve ever lived,” the 71-year-old entreprene…