Take the Port of Dover, handling 11,000 trucks a day. It accounts for 17% of our goods trade, as the former Brexit Secretary Dominic Raab recently discovered. According to the port, 99% of vehicles come from the EU and take two minutes to check. The rest take 20 minutes. After Brexit, they’re all non-EU and, an extra 1000 customs officers notwithstanding, Kent becomes a lorry park within a matter of days.