MANSTON, ENGLAND—Britain began rehearsals on Jan. 7, for the upheaval of a no-deal Brexit by lining up 87 trucks at a little-used airport for a trip towards the United Kingdom’s most important trading gateway to continental Europe.
With the British parliament deadlocked, the ultimate destination of the Brexit project remains unclear, with possible outcomes ranging from a disorderly departure with no deal to another referendum on European Union membership.