It's the growing trend of drivers in the Left hand lane on Round-a-bouts turning right (say third exit or more). Not only frustrating but also dangerous. Where has that come from?
I drive a fair bit in Spain and this is very common practise. So much so that my (Spanish) wife believed how they do it there was correct. It took a very in depth and sometimes heated discussion of me explaining how it should work for the penny to drop and admit I was right. I hope to look back in several years and see this as a watershed moment in our marriage.
But to answer your point, maybe it's all those furriners still over here.