If you stand on the South Bank of the Thames and look across at the skyline of the City of London, you’ll see a cluster of towers to the right of London Bridge: the gherkin, the scalpel, the cheese grater, the walkie talkie, and a few rectangular ones nobody bothered naming. The towers are all full of insurance companies. And they crowd around the Lloyd’s building on Leadenhall Street. Lloyd’s of London is the epicentre of the global insurance industry. It’s where you go to insure a supertanker of crude oil, a hurricane over Taipei, or a supermodel’s leg. The…