The UK has never created barriers and does not want barriers.
The EU is creating barriers to entry into it's economy for purposes of punishment (their words) - like the gym that makes you pay extra when you leave?
The UK is now free to negotiate deals with any nation in the world - and not restricted to taking what the EU provides it - this is not restrictive.
UK can now chose exactly whom it wants to migrate - this is not restrictive.
If it were up to the UK, the EU nations would be considerably less economically restrictive than they are today.
Finally - wages are up in the UK considerably, and property prices are down a little - which is exactly what we all want to hear when thinking about 'affordability'.
'Open trade' of real estate creates crazy bubbles and holds regular citizens under the tyranny of the massive cash-flows of foreigners who are able to hold their own citizens in indentured servitude. There are more empty flats in London than there are homeless people.
And the weak pound + slow down in migration from the EU has caused wages to rise - which is awesome.
Mass migration is 100% a downward driver on wages, only in very specific cases is it not - it's an issue some have a hard time grappling with. In the Alberta Oil Fields they want to increase migration for what they call 'labour input costs' - which is literally a different way of saying 'high wages'. In other words: 'wages are too high, we need more immigrants' - it's all rather obvious.
There are issues that should have been addressed by the EU, but they won't - so we have full revolt.
There's no reason for UKIP, True Finns, AFD, Sweden Democrats to exist - they exist because EU leadership won't listen to reason. In many ways America is the same - Trump is the ugly response to a system that wouldn't bend for some reasonable causes.
Brexit was an ugly choice, hopefully a real wake up call for EU leaders, sadly, they seem to be doubling down and it won't end well.