In my humble opinion, i dont think much will change

1. the UK will always remain part of Europe geographically and will cut a deal during the negotiation period
2. free movement of people will continue.... i cant see it being stopped, more checks will occur
3. the governments goal will be to get the benefit of the single market without having to run to the european court for every decision or appeal
4. in conclusion the uk will get back its sovereignty and still have a sweet deal with the EU, we might have to pay for it but it will be good in the long run
5. we will become more closer to the usa, uk laws in terms of security and privacy will move closer towards the usa and away from the EU
6. in 20 years we will be the usa's 51st state !