Ghost hunt at The British schools Museum

This will be our third visit to The British Schools Museum.
Used by many paranormal groups, this building has a long history of spooky going's on, but being the last surviving Monotorial Schoolroom in the world, it's an amazing building in it's own right.
On an initial walkround, back in 2019, I witnessed a school mistress, dressed in a tweed two-piece, in one of the girls classrooms, a shadow of someone at the end of the corridor upstairs and a group of us heard a baby crying in the head masters living quarters, along with emf readings and cat balls being triggered!