A pedestrian wears a suit, featuring the pattern of a British Union flag, commonly known as a Union Jack, in London, U.K., on June 10, 2016. U.K. Prime Minister David Cameron said he'll hold a long-pledged referendum on the U.K.'s membership of the European Union on June 23.
A pedestrian wears a suit, featuring the pattern of a British Union flag, commonly known as a Union Jack, in London, U.K., on June 10, 2016. U.K. Prime Minister David Cameron said he'll hold a long-pledged referendum on the U.K.'s membership of the European Union on June 23. Chris Ratcliffe Bloomberg
A pedestrian wears a suit, featuring the pattern of a British Union flag, commonly known as a Union Jack, in London, U.K., on June 10, 2016. U.K. Prime Minister David Cameron said he'll hold a long-pledged referendum on the U.K.'s membership of the European Union on June 23. Chris Ratcliffe Bloomberg