London

When the U.K. voted to leave the EU, a lot of questions were left unanswered. London banks do an enormous amount of international business, but with the doors to Europe shutting that could change.

Many people know London as a true city of the world, says NPR's Scott Simon. But he wonders what the U.K.'s recent vote to leave the European Union may mean for that reputation.

The U.K. likes to boast about how easy it is to do business there, but a profusion of shell companies hides many that are fronts for fraud and corruption. Now the U.K. wants more scrutiny.