By John Irish BERLIN (Reuters) - France's foreign minister called on Saturday for the European Union to move ahead quickly to seal the terms of a British exit, arguing that the other 27 members needed to give the bloc new purpose or risk populism taking hold. "Negotiations have to go quickly in the common interest," Jean-Marc Ayrault said on his way to a meeting in Berlin of foreign ministers from the six founding members of the EU - Germany, France, Italy, the Netherlands, Belgium and Luxembourg. Britain voted on Thursday to leave the EU, forcing the resignation of Prime Minister David Cameron and dealing the biggest blow since World War Two to the European project of forging greater unity.
London's financial center will lose its prized "EU passport" if Britain fails to secure continued access to the bloc's single market in its exit talks, ECB Governing Council member Francois Villeroy de Galhau said on Saturday. Banks based in London, Europe's biggest financial center, rely on what is called an EU passport to operate across the bloc's capital market unhindered while basing most of their staff and operations outside the euro zone in London.