Brexit was the 'stupidest thing any country has ever done (apart from electing Donald Trump)', says former New York mayor Michael Bloomberg as he opens London HQ

Former New York Mayor Michael Bloomberg, who made the controversial comments two weeks ago was in London earlier today to open his new European headquarters building. Mr Bloomberg met with London mayor Sadiq Khan and the building's architect Norman Foster, right, outside the state-of-the-art office complex which will house 4,000 employees.