Unless and until this case comes to court and all the evidence is out there, it's probably best not to speculate too much about the details. It is pretty clear though that this would be a unique situation arising from very particular circumstances - and certainly no basis on which to generalise about slavery in modern Britain. Clearly there are disparate cases of extreme exploitation, abuse and servitude but maybe Frank Furedi has a point about the inadequacy of the term 'slavery' to describe them.
Tempting too to draw general political conclusions about Marxist-Leninism as Bob from Brockley does. I have some sympathy with this approach, but again we probably can't deduce too much from this pathological case study. Once a political organisation is small enough to fit in one household we are really talking about small group interpersonal dynamics rather than political ideology, even if ideology can justify all kinds of behaviour that most people would find appalling.