LONDON, ENGLAND - MAY 14:  Jeremy Corbyn, leader of the Labour Party, listens to speakers at the Rally to Remain event at The Fleming Room in the QE2 centre on May 14, 2016 in London, England.  The Labour leader is presenting Rally to Remain, a campaign event in support of the United Kingdom remaining part of the European Union.  (Photo by Rob Stothard/Getty Images)