Wow that is incredible Howard. Bizarrely, I was convinced i saw one in Penclawdd three weeks ago, but it flew off before I was able to get a proper look at it. No doubt with yours though - absolutely spiffing!!!
Thanks Barry.Problem now is what to do with it. I think this is a notifiable species in England but I'm not sure about in Wales. Have to wait until the SEWBReC office opens on Monday and see what they say.
I've definitely not had one of those in the garden. Congrats Howard