Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. EU Tells UK It Will 'Never, Never, Never' Compromise on Single Market Reuters BELFAST/DUBLIN - The European Union will "never, never, never" compromise on the integrity of its single market, its chief Brexit negotiator warned Britain on Monday, saying London must now face reality after underestimating the costs of leaving. Some British politicians have suggested Brussels might be flexible on its rules in order to protect trade flows in talks due to begin in the coming weeks after Britain's formal exit from the bloc on Friday. But Michel Barnier, speaking in the British region of Northern Ireland widely seen as most at risk from Brexit, warned negative consequences were unavoidable. "There will be no compromise on the single market. Never, never, never," Barnier told an audience at Queen's University Belfast, describing the single market as the foundation of EU's international influence. .