Never been to Lemp Mansion myself (bit far from Manchester for a day trip!) but cold spots near staircases are something I find dead interesting. Reckon theres something about stairwells that attracts activity, same thing came up loads when I was reading about shadow people - they always seem to linger near stairs and doorways.
Anyone managed to get any photos near that spot? I've had some decent results with paranormal photography just in my own house so I can imagine a place like Lemp would throw up all sorts. Would love to see if anything shows up in the images, orbs, shadows, whatever.
What did the cold spot actually feel like, was it a sudden drop or more gradual? That detail matters I think.