LONDON, ENGLAND - APRIL 17:  Nigel Farage, leader of the UK Independence Party (UKIP), leaves The Northern & Shell Building on April 17, 2015 in London, England.  Richard Desmond, owner of Northern and Shell Media Group which publishes the Daily and Sunday Express newspapers, has donated £1m to UKIP.  The UK goes to the polls in a General Election on May 7.  (Photo by Rob Stothard/Getty Images)