If putting the top UK marginal tax rate higher than the US wasn't enough to drive American and Japanese bankers to Switzerland then a draft EU (who asked them) regulation might do the trick.
Bankers' bonuses and golden parachutes would be capped in all European Union countries under a draft policy circulating in Brussels. The European Commission will ask the 27 EU countries to bring in tougher remuneration rules for financial institutions with an office inside their borders, covering all staff whose jobs affect the firm's risk position. The new rules would also apply to all subsidiaries of EU-based parents, wherever located.
Directors' termination payments would be limited to two years fixed remuneration and share options could not vest in less than 3 years.
EU Recommendations are not binding on member states, but hey, why take the risk? The golf may not be up to much but the skiing beats the hell out of the People's Socialist Republic of Londonistan.