I just happened to be looking up into the very top of our biggest Oak tree (The Royal Oak), when I spied this nasty looking nest.
It's a Hornet's nest, and is about the size of 3 footballs. I know it's still in use as I can see the big beasts buzzing around. With my binoculars I can even see the entrance hole where they go in and out.
So, what to do! Well the Hornets don't survive Winter, so probably best to leave well alone. I've known people set light to them, but this one is right at the top of the tree.
At some time during Winter the whole nest will drop down, so I'll try to take some close-ups later. For the moment, they're not troubling us, so I won't trouble them.
In case you're unaware, a couple of stings from these nasties (and you don't get some treatment pretty darned quick) it's 'goodnight'.