All week long, we're examining the financial world with a wide-angle lens. Today, our 'think global' series takes us to the world's biggest center of international finance. And no, it's not Wall Street. It's much closer to Fleet Street, at least geographically. Back when Britain ruled the waves, many of the strings were pulled by bankers in the City of London. The spiritual descendants of those bowler-hatted bankers still run the city today. But as Marketplace's Stephen Beard tells us, their accents aren't what they used to be.