Loads of the Harry Potter movie forest bits were filmed in Swinley. I got chased off the set where they caught the invisible horse-thing carriages by a very angry security guard who had clearly had enough of being at the end of a cheeky trail and being buzzed by riders non stop at weekends.
If you happen to watch the latest Jurassic World movie and think the forest and trails look familiar, it's because it was partly filmed in Surrey Hills