Remain won in Scotland and Northern Ireland. Only England and Wales voted Leave.
Maybe fortify/rebuild Hadrian's Wall and finally make it the border between Scotland and England, with it serving as the border between the UK and the EU as well?
I'm aware it never had been the Scottish border, but I thought it was close enough. Apologies.
I think the Leave/Remain voter split in your country is very like our Red/Blue voter split over here. I don't see how either set of divisions can be reconciled. I'm increasingly being led to believe that neither Brits nor Americans are governable as a whole.