
London was a - indeed the - centre of banking long before the EU and will continue to be long after, so don't worry your pretty little head about that. Your suggestion that without the EU we couldn't have been rather gives the lie to any suggestion that you have any historical understanding whatsoever, though.
You seem to have picked up the utterly bullshît received idea that we left the EU because racism. I'm guessing maybe you read one -maybe two - op-eds in The Guardian or the Washington Post to get that impression. If that is the level of your understanding, I don't have the time or the inclination to disabuse you of your idiotic notion. Try actually finding something out about the EU, how it works and why levels of support for it are currently as low as they are among its citizens and then come back to me.