Brexit supporters have been celebrating the start of Britain’s withdrawal from Europe. #backbritain pic.twitter.com/iIxiXF7rC1— ConservativeProgress (@ToryProgress) March 29, 2017 Within hours of Article 50 being triggered, and Prime Minister Theresa May hailing the United Kingdom’s “great turning point”, Brexiteers were raising a glass at a pub in Westminster. In a speech to the party, Conservative MP…