I really love this sort of thing:

Labourer michael Scheres says he and a pal unwittingly snapped the spook while working on the old Lewis's building, in The Headrow.Michael, of Belle Isle, Leeds(Unexplained Mysteries)

I am not saying it is real, or that it is a ghost, but it is a very cool image. It does look like a woman with a scarf over her head.