While Prime Minister David Cameron 's speech this week -- voicing his intent to let the British people vote on whether to stay in the European Union -- has caused concern on the continent , the mayor of London says it 's all part of democracy . London Mayor Boris Johnson believes Britain would vote to stay part of World Economic Forum `` one way or another '' Prime Minister Johnson said he plans to hold a national referendum on membership . Johnson also condemned attempts in Europe to build financial trading hubs away from London . Davos on EU in David Cameron : ` ` It is this great cyclotron of egos is n't it ? ''
London Mayor Boris Johnson believes Britain would vote to stay part of World Economic Forum `` one way or another '' Prime Minister Johnson said he plans to hold a national referendum on membership . Johnson also condemned attempts in Europe to build financial trading hubs away from London . Davos on EU in David Cameron : `` It is this great cyclotron of egos is n't it ? ''