It will almost certainly get knocked down and block of luxury apartments built, as they have done with the property next door. Sell 6 of them for 300k a time, you've made a tidy profit.
The house itself is really unique. The biggest disappointment for me is that it was lacking those 2 essentials of a luxury home from the 1970s - a sunken bath with carpeted surround (my auntie had one of those, I loved it!) or a sauna.
I think it's clearly been owned by someone in the entertainment industry, but I think probably more like an agent. Or a Brian Potter type club owner.
The most interesting thing for me is it was last sold in 1998. I assumed the owner would have lived there for 40 odd years.