In reply to charliesdad:
Notices have been posted by the landowner and the BMC, although I'm not sure whether they are all fully visible at the moment. So in principle they are legally covered, although the situation with the residents could be more complex.
Interfering with the natural process would have serious legal implications and could have unintended consequences, so I think that is a pretty stupid suggestion. The movement has been monitored for 6 years. It has been a one-way process, that has just speeded up rapidly. At some point it will fail. It is likely to be unpredictable, surprising and sudden.
Prediction would be possible with proper continuous strain gauges, telemetry and a warning system as on railway lines and other slopes, but no one has shown any urgent interest in doing this yet.
I think there are one or two large boulders in the vicinity above the houses, so there is nothing new about the current situation. We live on a dynamic earth where this kind of event is normal. A six-foot boulder at the foot of Via Media tipped over just a few years ago, as Tommy Cooper said, "just like that".
DC