Just a comment. We moved from France to UK on 11th March this year. The removal firm quoted in early February. The move took place, but when we took the guys to lunch in the local pub (an extra 'thank-you' for their efforts', they disclosed that they had made no profit because they had altered their travel plans to a more expensive crossing from Le Havre, because of the migrant situation at Calais.
A friend (source of our shipments of wine yeaaah!) who makes regular crossings in his van doing general deliveries and we give him B & B, said last time that he had gone to Dieppe rather than Calais and had had to increase his rates. So people are already avoiding it. Desperately bad for Calais and the French, you have to understand how fed-up they are (but they can't be allowed to renege on agreements).