A best fit lookup file between Middle layer Super Output Areas (MSOA) as at December 2011 and MSOAs as at December 2021 in England and Wales.The lookup contains all the 2011 MSOAs (7,201) and these are point-in-polygon to the 2021 MSOA full extent boundaries (which contains 7,182 records, so 82 MSOAs are missing from the 2021 MSOAs)(File Size 600 KB).Field Names – MSOA11CD, MSOA11NM, MSOA21CD, MSOA21NM, LAD22CD, LAD22NM, LAD22NMWField Types – Text, Text, Text, Text, Text, Text, TextField Lengths – 9, 32, 9, 39, 9, 35, 24