There have been predicitions of violence and civil unrest if Brexit is not carried out, hard Brexit in fact. And I am sure that will be the case- Farage, Ukip, the EDL, BF - they are all getting ready. Government policy has always been that we must never give in the threats of deeds of violence, or terrorism, wherever it comes from.
However- I'll make another prediction- which concerns me a lot more as it woule be very long term, and in so many ways so much more damaging. We all know financial services are leaving, have left ot preparing to. And so many businesses- some huge providers of employment, and taxes too.
But perhaps even worse, and little talked about- is the massive brain, talent, ability, entrepreneurial, research, inovation- drain. Intelligent young people see no future in Brexit Britain and 1000s will not stay 'behind' on a little isolated island- where they will be wasted. All the above rely on EU and international joint activities, cooperation, intelligence and so much more. This is really sad- tragic indeed.