On the news just now it was stated that the UK is having to tread carefully with France because it has allowed us to have our border guards in France: in Calais. If we push the French too hard they could cancel that arrangement and move them back to Folkestone/Dover and the problems this side of the Channel would become much worse.
What a mess!
If that was the case maybe a temporary closure of the Chunnel would be in order.
I was reading earlier that it has cost Kent police £700,000 and a similar amount for Kent County Council. It is costing hauliers £700,000 per day and the country as a whole £250m per day. Something has to give.