We have a caravan on a site on the edge of Dartmoor, near Ashburton in Devon.
I found one of these bugs in my caravan awning, crawling up the side of the van, on 25th September this year... the wife didn't like the look of it, so I caught it and let it go outside.
A week later I found another inside the awning, crawling across towards the van. I trapped it in a tupperware box, and took a couple of pics. Again, let it go... was sure it was a moth, decided to try and find it on the internet... Success!!!
Hope I don't find a colony of them in the van when we re-open it in March!!