They aren't EU flags, they're European flags. Dover is still on the European continent.

Just come across this topic and I'm super excited for this map to be released, it looks great so far!

You do know that this is not an accurate picture of the UK, there should be a line just above London then everything above that line labelled 'The North' The North starts at the Humber you plum. Is anybody working on Newcastle? The bypass could be nice, with the ferry rebuild. I've driven recently ...

Maybe they just realised how much cooler Danish signs look than Swedish ones.