A while ago there was loose talk of erecting a statue of Messrs Sarbanes and Oxley in Canary Wharf to thank them for jacking up Wall St regulation and – therefore - pushing overseas listings to London. It would have served as a reminder to politicians that in this world of the uber-mobility of capital, they can do great damage because financiers already live a multi-country existence and do not wait to be whacked by tax or regulation. The City of London has become a little gilded space station, where Japanese come to business with South Africans. Non-doms attract other domiciled, taxpaying business to London – the whole thing stuffs Brown’s coffers with gold. I always believed Brown understood all this (and suspected the Tories did not). But both parties, in the end, proposed taking a carving knife to the Golden goose which is the City of London.