These notes concern the historical statistics for modern local authorities, which have been created for Vision of Britain by re-districting statistics originally reported for other units. We have also had to deal with variations in the categories and classifications used in statistical reporting over the years.
- 2001: The data are as supplied by the Office of the Deputy Prime Minister (ODPM), and were computed using a methodology which allocates all identifiable land features on Ordnance Survey maps into nine simplified land categories: Domestic Buildings, Gardens, Non-Domestic Buildings, Road, Rail, Path, Greenspace, Water and Other. The index is currently experimental.