I am sure Jolla will happily embrace the UK market, as this is still Europe and because they have some ties there while the UK has promised to be quite opened to trade.

That being said, I disagree to many points from @switch-hitter
This is probably because I am an economist :P

I believe Brexit was not mostly based on economics. All economic reasoning that have been used to convince people for brexit were/are mostly excuses to justify something based on politics.

The view of Martin Sandbu is quite balanced I believe (even though I am sure the FT is viewed and played the card against brexit):
The UK gained more autonomy but what is it good for? (https://www.ft.com/content/8c0aaf62-...5-2b14d1ae342d)