@weirdestate@eigenmagic.net
This house is a really cool time capsule but the telephone prison cell and the stair landing of death are both a bit baffling. There is a model of the actual house inside the house, though! The listing mentions there is scope to redevelop but I hope no one touches this place.
https://www.rightmove.co.uk/properties/163513013#/?channel=RES_BUY