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I download Land Registry price-paid data every month to monitor prices. The files I download are the yearly ones from 2005 onwards. My expectation was that the data for years in the distant past would be unchanging from one download to the next. However, that is not the case; even for the earliest years, there is variation. Attached is a plot that shows, for each year, the number of datapoints in the file (y axis) against the download date (x axis). E.g., for 2005 data, there are around 1000 fewer datapoints in the most recently downloaded data, compared to data download in Jan 2017.
Anna Powell Smith, a developer/data scientist, has created a plot of house prices per square metre, by combining Land Registry data with area data from Energy Performance of Buildings Data, see here: https://houseprices.anna.ps/ I think the Energy Performance data has only recently been made available, though I'm not 100% sure about that. It is at the following link, but you need to register: https://epc.opendatacommunities.org/ It should be possible to use the same idea to produce more accurate plots of price changes over time than is possible with the LR data alone.
Article http://www.citylab.com/politics/2015/06/incredibly-detailed-map-europes-population-shifts/396497/ Dark BLUE patches show an average annual population FALL of 2 percent or more, the medium blue patches a fall of between 1 and 2 percent, and the lightest blue patches a fall of up to 1 percent. Areas in beige have experienced no statistically significant change, while the red areas show population growth. Municipalities in deep RED have experienced an average annual population RISE of 2 percent or more, the medium red of between 1 and 2 percent, and the pale pink areas of up to 1