"Roland Perry" wrote

Or there has been no transfer of ownership involving payment since
prices became a matter of public record.

The Land Registry data available to the public via sites like Zoopla
only includes sales made on the open market. So a transfer by compulsory
purchase (or even a voluntary sale after being contacted by Network
Rail, or whoever) would not show up.

Have you a cite that voluntary sales are excluded ?

http://houseprices.landregistry.gov.uk/
"all of the residential property sales"

https://www.gov.uk/government/public...se-price-index
The HPI is published by Land Registry using sales data collected on all
residential housing transactions, whether for cash or with a mortgage, in
England and Wales since January 1995.
==

Oops, found
https://www.gov.uk/about-the-price-p...rice-paid-data

Our House Price Index and Price Paid Data exclude:

all commercial transactions. By this we mean any transaction that
involves a transfer to a corporate body, company or business

transfers, conveyances, assignments or leases at a premium with nominal rent
which a
[...]
under a compulsory purchase order
[...]


So not exactly "excludes other than open market" but as above.


--
Mike D