P.J. Denyer
Penultimate Amazing
Just a gut feeling... but the UK drivers that are likely to drive down into the continent are most likely not the ones that voted for Brexit and thus should be alright.
That's not my experience, all the Leave voters in my old pub were retired with second properties in Europe who would drive there and back a couple of times a year. The most fervent leaver I've met was an obnoxious 'Kipper who would go into a full on rage at the slightest suggestion of anything less than a full and immediate hard Brexit with no compromise, he was a fellow vintner and would make multiple runs to France each year to fill his 4x4 with wine for himself and to sell to his private clients.