Death's-head Hawk Moth.
Author:
Found this little fellow alive in my attic yesterday (Wed 4th Sept.) I opened the windows but he failed to make it and I found him/her dead this morning on the floor minus his head.
He has a wing span of approx. 4.5 to 5 inches and is quite rare in the UK.
My attic looks like something out of the Adam's family's house. Even the bat's backed off from attacking this guy and I think he might have collided with one of the other windows to have lost his head. The 'skull' can be seen easily on the back of the wee beastie. So sad he died.