Well frankly I think he is worried that being more integrated they would likley create a tax on the financial system and London is dependent on the Fin sector.
Also, it only makes sense to give up control over your fiscal policy to technocrats in Europe if you share the same currency.
The UK does not, so it can manage its economy how it wants, as it does not have serious effects on everyone else, unlike Italy going bankrupt.
Plus the British people like EU but do not want to further integrate.







