First of all my perspective is that of an outsider I am not from the UK and have never been there. Now I do not think it will be positive, first of all you now have a divided nation polarized by Brexit, you even have the threat of the whole country collapsing into Scotland, Ireland and just leaving England and Wales in the Union.
Then you are leaving the largest trading zone in the world, with whom you will still have to trade but now under less beneficial circumstances, certain businesses will certainly leave or at least reduce operations in the UK, I'm talking about those who use the UK as an entry place to the EU.
You will lose out on some EU talent, people who will now think very hard before taking therir chances in a UK that is polarized and where they might fear they may, rightly or not, expect some type of unwelcomeness (I don't know if that one is a real word).
You will always have trade deficits because you are not self sufficient food wise, so you will have to buy food, and if you get WTO tariffs EU food will be more expensive. Sure you can buy food cheaper in countries outside of Europe, but I think transportation costs will still make them expensive.
It might not be a catastrophe but I don't see where you will be better off, still I wish you come out all right.