As I got back from a morning visit to Studland, I had brief views of an interesting-looking Butterfly in flight, that landed just outside my garden gate. Initially, I couldn't see it until I got closer, when I realised it had its wings closed. It was a Wall. When it opened its wings, it was a lot more obvious. Fortunately, it didn't flush & allowed me the opportunity to get some photos with the IPhone, as I couldn't get my Canon camera from the house without flushing the Wall.
They are an erratic species in the garden. I saw in Aug 21, but the one before that was May 15. It's good to know they are still around locally.