By City AM reporter London, number one financial centre in the world. One can imagine that a Square Mile which has spent the past year worrying about US take-private raids, an almost total collapse in significant IPOs, and an ever-increasing tax burden would take that badge of honour with a pinch of salt. But that is what we are, at least, according to the latest report from – yes – the Corporation of the City of London. Get beyond the initial scepticism though and there’s plenty in there to warm the cockles of even the most glass-half-empty critic. We’ve made ground on regulation (albeit not …