This Geodata pack provides a number of files associated with the 2018 Internet User Classification (IUC). The IUC is a bespoke classification that describes how people living in different parts of Great Britain interact with the Internet. It provides aggregate population profiles of Internet use and engagement at the Lower Super Output Area (LSOA) and Data Zone (DZ) level (2011 Census Geography). It has been developed in order to update and expand to the previous (2014) IUC and as such includes wider and more comprehensive data, built from a range of consumer, survey and open data collected by the CDRC. For sub-national level geodata packs at the individual Local Authority District (LAD), Local Enterprise Partnership (LEP) or Combined Authority (CA), please visit [https://data.cdrc.ac.uk/geodata-packs](https://data.cdrc.ac.uk/geodata-packs)