They're here... and they're taking over Europe! For this list, WatchMojo UK counts down the strangest, most infamous and most unexplained alien close encounters across the whole of Europe. With strange events in Britain, France, Finland, Spain and more... which of these examples do you think is ...

Aliens in the UK! For this list, Watchmojo UK counts down the most infamous, unusual and unexplained alien encounters ever to take place in Britain. Featuring unidentified alien spaceships, bizarre UFO formations, and incredible UFO footage that needs to be seen to be believed! Check out these ...