London's superrich have been fleeing the U.K. to Switzerland

London's superrich have been fleeing the U.K. to Switzerland to escape the new 50% top rate of tax and a proposed bank levy. Hundreds of hedge-fund managers already have left. But will they soon be heading home again? The Swiss go to the polls this week to vote in a referendum on whether to introduce a new minimum 22% top rate of tax on income above 250,000 Swiss francs ($252,500) and a 0.5% levy on all assets above two million francs. That has prompted some of Switzerland's richest business figures to threaten to quit the country if the law is passed, among them Alfred Schindler, billionaire founder of the elevator company that carries his name. These threats may be hitting home, with the latest polls suggesting public opinion starting to swing against the plan. But for anxious City exiles looking for a Plan B, there's always Monaco.