This article in Inside Housing is great, Inside Housing is frequently great actually. It talks about asian investors buying up London Property and references another article by the same author, which examines the effect of London Property being treated as a reserve for the wealthy.

What I would say, is that for London Property to be that investment, it really needs many things which our current crisis put in jeapordy, and months ago there were warnings that if the Euro should break up, then London Property would be hit particularly hard.

Since then, events have developed.