Where people live in households or neighbourhoods is closely associated with a range of socio-economic and other factors. Many such factors are key to answering questions and providing solutions in the advanced care setting. For example, from one’s address, we can infer whether someone is a care home resident (type of residence), or lives in an affluent or deprived area, or one with high or low air pollution (environmental factors). In principle, GP registration address recorded in the Community Health Index (CHI) would allow us to accurately identify where someone lives (beyond existing uses of address postcode which is less fine grained). Utilising the Unique Property Reference Number (UPRN) created by the Ordnance Survey (OS), we can develop a more granular picture of where people live utilising a coded system that removes the need for addresses, reducing identifiability of data for research and innovation.