- Better control of borders
- Less money being spent on the EU
- Lower youth unemployment
- Less EU regulations on businesses
You're actually looking at a weaker economy rather than a stronger one in the near future. The UK's murky political and economic outlook points to less business investment, which leads to a weaker currency.
As for better control of the borders, negotiations on the terms of Britain's exit haven't even begun yet, which means the immigration situation doesn't have a solution right now, just rhetoric. The U.K. has to keep its borders open until the deal is fully settled. If you're hoping for a massive reduction in immigration, you'll be massively disappointed over the next few years.
If the UK was truly capable of sustaining itself without the help of the EU, then the markets wouldn't be crashing right now. If you're looking for these results within the next
decade, prepare for disappointment.