A best fit lookup file between Lower layer Super Output Areas (LSOA) as at December 2011 and LSOAs as at December 2021 in England and Wales.The lookup contains all the 2011 LSOAs (34,753) and these are point-in-polygon to the 2021 LSOA full extent boundaries (which contains 34,628 records, so 1,044 LSOAs are missing from the 2021 LSOAs)(File Size 9 MB).Field Names – LSOA11CD, LSOA11NM, LSOA21CD, LSOA21NM, LAD22CD, LAD22NM, LAD22NMWField Types – Text, Text, Text, Text, Text, Text, TextField Lengths – 9, 33, 9, 40, 9, 35, 24REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/LSOA_2011_to_LSOA_2021_to_Local_Authority_District_2022_Lookup_for_England__2022/FeatureServer