Peter Erskine, CEO of O2, has said that the iPhone “has been the fastest-selling device we have ever seen,” according to a Times report. Exact figures for the iPhone’s UK launch have yet to be released, with the Times claiming that Erskine said it had sold “in the tens of thousands,” while a CNN Money report states Erskine said it had sold “hundreds of thousands” of the devices since its Friday debut. Aside…