I was just in Barns Green , near Horsham Sussex, I couldnt hear any thunder but suddenly the wind was swirling around, everyone in the village shop was saying its a tornado help lol!! The sky was so black, there was no rain but very, very strong wind and all the leaves were falling off the trees and twigs and acorns raining down on our car, not sure what that was but it lasted a few mins and its gone now!