With just 23 days until Britain’s exit from the European Union truly begins, the country got a taste of the havoc that trade disruption could bring. Honda shut down production on Wednesday at its biggest plant in Europe, where more than 3,000 people assemble Civics, showcasing the severity of the congestion and delays that have gripped Britain’s ports. The 370-acre Honda factory in Swindon, about 80 miles west of London, operates a “just in time” manufacturing supply chain, with goods arriving and going straight onto the production line to avoid large and costly storage facilities. Production was halted “due to transport-related parts delays,” the Japanese automaker said Wednesday, and would resume “as soon as possible.” On Thursday, it said the plant would remain closed for the rest of the week. […]