LONDON, ENGLAND - JUNE 24: People react to a regional EU referendum result at the Leave.EU campaign's referendum party at Millbank Tower on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning.(Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - JUNE 24: People react to a regional EU referendum result at the Leave.EU campaign's referendum party at Millbank Tower on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning.(Photo by Jack Taylor/Getty Images)