Forces are building against the UK capital and its role as a global financial hub. Ironically, the latest salvo in the battle may well come about because of David Cameron's attempts to protect the City at December's European Union summit. Cameron's veto of a broad European treaty to help combat the eurozone crisis was, in large part, due to a lack of concessions from other leaders on his efforts to insulate the City from proposed regulation. But for many financial workers he might have achieved the opposite: threatened London's long-term future as a financial centre. For some senior bankers, there needs to be less denigration of the City and a review of policies.