Please, after all the lies of the leave campaign, can we stop casually spreading utterly false information?
Ignorance is a terrible, terrible thing.
That is literally what i was saying.
Having to show ID or getting inspected doesn't violate the notion of free movement in the way that this term is used.
It's just that it's not commonly done in most modes of transport between most borders, e.g. cars between the Netherlands and Germany. But the UK is not alone in this, take the eurolines like I have half a dozen times (a bus network commonly used by poorer people, including poor immigrants) from e.g. the Netherlands to France and you're guaranteed to run into checkpoints. And if you've got the right ID for which there is freedom of movement, you're free to move.
UK opting out of Schengen has nothing to do with it, EU citizens are visa-exempted and I as a European have traveled to the UK many times without a visa.