Irrespective of that, it's pretty clear that Brexit will force Westminster into promising drastically increased levels of devolution not just to Wales, Scotland and Northern Ireland, but also to the major urban regions like Greater Manchester and Greater London that will reduce the de facto power of Westminster dramatically and allow the regions to drift even more apart in terms of differences in public policy.
At the same time there is a major split amongst those who considers themselves predominantly or only British or who considers themselves British first vs. those who predominantly see themselves as English, Welsh, Scottish or Irish first, and British second or not at all, with "Britishness" being weak and fractured.
Basically, to a lot of people living here, the UK means as little or even less than the EU, compared to other parts of their identity.
And a lot of the political discourse has been around how the elites ignore people. What people are about to find out is that in that respect the London elite were the ones ignoring them, not Brussels, and accordingly Brexit will not solve any of the problems they had in that respect.
Expect to see increasing upheaval and pressure for more power to be devolved from Westminster as a result. E.g. after the Brexit vote there was a brief flash of people talking about pushing for independence for London, and while that won't happen anytime soon if ever, expect to see those debates flash up again and lead to an actual (if miniscule) political movement at some point over the next couple of years.
I personally think that while the UK may persist in some form, the UK 10 years from now is reasonably likely to exclude Scotland, and the UK 30 years from now is likely to exclude Northern Ireland, and be more like a loose federation with massively devolved powers to Wales and several English regions and at least Manchester and London. Maybe even with increasing support for Welsh independence.
It's been nine months and starting the article 50 process is suppose to happen soon, but I have a feeling the UK will negotiate its way into the Economic Zone instead, keeping trade and immigration without work visas, while forfeiting their place on the EU parliament. Either that or they'll just ignore the will of the people and never leave.
And we need all this new cruft because the current situation is insufficiently complex.