Went past the old Remington mill last autumn with a mate and we both clocked something moving near the upper windows, like a solid dark shape but definitely not a reflection or bird or anything obvious. We stood there for a good few minutes just watching it. No torches, no one else around.
What gets me is we never talked about it at the time, just kind of walked off, and it wasn't until a few weeks later when I mentioned it that my mate went dead quiet and said he'd seen the exact same thing. Thats the bit that proper stuck with me.
Has anyone actually been inside? I'd love to do a proper walkthrough of the place if its accessible. Shadow figures in old industrial buildings seem to come up a lot - genuinely curious whether its the environment or something else going on there.