Bagpiper and busker David Whitney of Aberdeen, Scotland, plays the bagpipes near Big Ben and the Houses of Parliament in central London September 10, 2014. The referendum on Scottish independence will take place on September 18, when Scotland will vote whether or not to end the 307-year-old union with the rest of the United Kingdom. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SOCIETY POLITICS ELECTIONS)