In London only. Subsets of the wider market can always work completely differently to the norm.

It's all these statitician types earning £2K a day from home in between posting on CUK that's buying them all up.
Nah, it's all the people who just shifted their shoebox in town onto a wealthy foreigner for far more than it's worth moving out to the burbs.

Many properties are on the market for just few days and are sold above the asking price.
FT ran an article this weekend saying "the domestic buyers" may be priced out. It doesn't look like the 2013 was the big bonus year for most bankers.
So who is behind the insatiable demand for houses in London this time?
Will the bubble burst?