I wondered from the path on one nature reserve into a patch of old pasture -woodland where I thought that fungi might be present and there were some. At one point I ducked under a fallen branch from an oak tree and caught an elastic string from my rucksack (which was on my back) on a knobbly bit of the branch. This stopped me in my tracks - so I turned and freed it from the trees grasp. I then noticed a loud buzzing noise and spotted a hornet. I then realsied that the hornets had a nest exactly where my rucksack had been caught. They did not seem to mind my presence but I did not get too close when taking the photographs, as they flew sorties around me and off into the wood...!
More hornet images: