LONDON, ENGLAND - JANUARY 27:  The More London commercial estate (foreground), Tower Bridge and Canary Wharf, seen from the View from The Shard on January 27, 2014 in London, England. A study has found that one in three 22-30 year olds are leaving their hometowns to move to the capital, which creates ten times as many private sector jobs as any other city.  (Photo by Matthew Lloyd/Getty Images)