STEVE INSKEEP, HOST:
Here's a question. What happens when a banker to the world starts cutting itself off from the world?
LINDA WERTHEIMER, HOST:
London is a great financial center. And it is, of course, in Great Britain whose people just voted to leave the European Union. NPR's Jim Zarroli reports on what happens to the banks now.
JIM ZARROLI, BYLINE: London has been a global money center for centuries. But in recent decades, with deregulation and the explosion of global trade, its importance has only grown, especially in derivatives and asset management. It now rivals New York City as a financial power. Nicola Veron is a senior fellow at the Belgian think tank Bruegel.
NICOLAS VERON: There has been a rise in financial globalization, more financial business being done across borders. And London has positioned itself as the best place to capture this business.
ZARROLI: London doesn't just have big banks and trading firms. It has a huge army of accountants and lawyers and consultants. In fact, the financial services industry plays a much bigger part in the U.K.'s economy than it does in the United States'. Before the Brexit vote, Chancellor of the Exchequer George Osborne warned a group of bank employees about the consequences of leaving the EU.
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GEORGE OSBORNE: It is deceiving people to pretend that we can leave the EU - quit the EU and jobs wouldn't be at risk.
ZARROLI: As long as the U.K. is part of the European Union, its companies can do business anywhere on the continent. And it can move people around without worrying about visas. But last week's Brexit vote leaves everything up in the air. Mark Compton is a partner at the law firm Mayer Brown in London. And he says no one really knows how the vote will affect financial firms.
MARK COMPTON: Although the people have voted to leave, nobody will know for a number of years exactly the terms on which we will be leaving.
ZARROLI: And he says no one really knows how the vote will affect financial firms.
COMPTON: So the U.K. is going to be wanting to do its best to preserve the trading environment for financial services, not only for its own businesses, but for those from the U.S., Asia and elsewhere that have set themselves up in London. So it's going to be fighting to keep that.
ZARROLI: Compton says the U.K. could leave the EU but join another union called the European Economic Area. It's not a great option. Joining it would allow the U.K. to still do business anywhere on the continent. But it wouldn't have any say in the EU's laws. And it would still have to open its borders to unfettered immigration, which, given last week's vote, seems politically unpalatable. In the meantime, some big banks are already drawing up plans to pull employees out of London. Nicolas Veron says banks are anxious to show customers they have a plan B.
VERON: Financial firms hate uncertainty. And at this point, there is a huge amount of uncertainty, legal and political, into United Kingdom.
ZARROLI: These firms are said to be weighing whether to move operations to some other city in Europe, such as Frankfurt or Dublin. And Paris has been making a pretty hard push to attract some of the firms. Paris's deputy mayor said recently that he doesn't necessarily want to see big banks flee London. But if they do, his city is more than willing to roll out the red carpet for them. Jim Zarroli, NPR News.
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