MANSTON, England—A convoy of nearly 90 trucks rolled through the southeast English countryside to Britain’s main port to continental Europe on Jan. 7 in a government test-run for a potentially chaotic Brexit that was mocked as a farce by opponents of the split.
Prime Minister Theresa May is trying to force her Brexit deal through parliament but lawmakers are expected to reject it. If so, business chiefs and investors fear the world’s fifth-largest economy will leave the European Union on March 29 without an agreement on their future relationship.
