Went there twice in 2019 with a mate from Maidstone, second visit we both clocked something in the upper window of the main building - tall, no real shape to it, just this dark mass that moved away from the glass when we shone a torch up. No reflection, no obvious explanation for anyone being up there given the floor had partially collapsed.
What gets me is we didnt discuss it until we were back in the car and described the exact same thing independently. That doesnt happen with suggestion or expectation bias.
Anyone else get the sense that whatever was there was aware of being watched? That retreating motion wasnt random, it felt deliberate. Would love to compare notes with others who visited before the demolition, especially anyone who went in the early hours. Daytime visits to that place always felt completely flat to me, all the activity seemed concentrated after midnight.