According to the Brexit politicians they don't want isolationism, rather they want to open up the UK to the rest of the world. At the moment they have to privil

According to the Brexit politicians they don't want isolationism, rather they want to open up the UK to the rest of the world. At the moment they have to privilege economic immigrants from the EU, and make it harder for high skilled workers to come to the country from the rest of the world. There will be a powerful political mandate to institute an Australian style points-based immigration policy ... this can be fine-tuned year on year to bring in the skills the UK needs, rather than an open door to the EU and barriers to everyone else. If you're a high skilled Norwegian worker you may find it easier to come and work and settle in the UK post Brexit than before. I don't think there's any question that the UK will continue with a high level of immigration.