The other day I did a search of my neighbourhood using primelocation.com, which has access to all properties sold since 2000, and the price paid.
Two interesting things: very little seems to change hands round here (SE1 6--), in fact not one house or flat in my street (which is admittedly part council/part privately owned/privately tenanted) was sold since 2000.
Secondly prices aren't that high - flats in the nearby council blocks for not much more than 120 - 150k. I think the best price was 265k for a nice two bed flat in the next street last year.
If you cover all of SE1 6-- the maximum goes up to £415K (Metro Central Heights). Prices in some neighbouring SE1 4-- postcodes are even heigher.
My personal experience is a 43% rise in the 18 months since we moved (based on mortgage company re-valuations). Another 200% plus rise in the next decade would be great (from a home owners perspective), but surely not that likely?
The flat I'm buying at the moment has gone up 37% since Jul 2005 and 93% since Aug 2000 based on a quick calc on land registry previous sale prices and what I am paying for it. I think 2000 might have been when the terrace house was first converted into 3 flats.
I'm more towards E&C than Borough though so hopefully my stratospheric rise is still to come...