Another Brexit benefit:
Simon Calder, travel correspondent at the Independent, said processing times since leaving the EU had increased sharply "and that would seem to explain the delays".
Speaking to BBC Breakfast, he said that having an EU border at Dover meant things were "gumming up", and that each individual passport must now be inspected and stamped.
This means that coach loads of passengers must disembark to have their passports checked, adding to delays.
I expect Brexiteers will be glad that France is now controlling its own borders.