The rest of the world has by definition to get by without being "the financial capital of the world", and that includes places which manage pretty well.

That's fortunate because it seems highly unlikely that this status - "financial capital of the world" - will stay with London for all that long. The world doesn't work that way.

If the City were to be lifted up by some Arabian Nights Genie and taken to the other side of the world and deposited there I think we could manage pretty well.