According to cnbc, in a further twist to the U.K.'s political fallout following the vote to leave the European Union, former London Mayor Boris Johnson has ruled himself out of the race to be the U.K.'s next prime minister.

Several high-profile members of the U.K.'s ruling Conservatives had thrown their hats into the ring Thursday to become the next leader of the party, prime minister and chief negotiator for Britain's future in Europe.