The data sets provided here contain the numbers and proportions of dwellings that have been recommended as suitable for loft insulation, cavity wall insulation or solid wall insulation in a EPC. The address level data has been processed to ensure only the most recent EPC data for an address is included (where dwellings may have had several EPCs in previous years), and has be aggregated to the following levels of geography (with ONS shorthand geography codes that appear in the data): - Postcode. - Census Output Area (oa11). - Lower Super Output Area (lsoa11) - Electoral Ward (osward).