A majority of Britons support rejoining the European Union's single market even though that would mean the restoration of the free movement of workers from the bloc, according to a poll published on Wednesday.
The UK is as much of a member of Europe as Greenland is a member of America... you could count it, but you could also just not. When people are talking about North America they're usually not thinking about Greenland. In the same way, the UK is often not considered when talking about Europe (although it is more tied to mainland history). When people say Europe they often mean to exclude some countries like the UK or maybe Turkey (but not always).