My only concern as a dedicated UK holidaymaker is that the crowds of people who normally go abroad will now make it more difficult to get accommodation, and make places so much busier and less enjoyable. We were already tending to stay at home between June and September anyway, as part of our crowd avoidance strategy. Places like Devon are much better in December. The roads are also semi deserted, and we have the right gear for bad weather. But that doesn't work for Scotland too well.
I'll be happier when the great unwashed piss off back abroad to be honest.
