Through the rise of European populism — from Brexit in the West to Orban in the East, from the Swedish far right in the North to the Italy's Northern League in the South — European politics and economics have been completely altered by the emergence and strengthening of populist movements. But what are the economics behind the erosion of the centre in Europe and where is it all likely to end? Britain, traditionally the paragon of common sense, has already lurched off course on its Brexit odyssey; could this happen in other countries? What about France?