LONDON, ENGLAND - MARCH 02:  Barmen pour ales and stouts for drinkers at the London Drinker Beer and Cider Festival at the Camden Centre on March 2, 2016 in London, England. The event is run by Campaign for Real Ale (CAMRA) and features over 70 real ales, ciders and perries from over 50 breweries.  (Photo by Chris Ratcliffe/Getty Images)