I was talking to somebody the other day, about this. They mentioned the connection with the salt works in the area and how things are still moving. I think, going by this claim, if you looked at an old picture of the wall along the front of the factory, that still exists, you compare it with now and see how much the corner of the site - and road! - have continued to move. Of course, being honest and mentioning this would mean having to help people a cost and reducing property prices. I just wonder what the surveys on any houses on that area say?