Migration Observatory identifies ten key gaps in UK immigration evidence base
The Migration Observatory has published a briefing identifying ten significant problems in the UK's immigration data and evidence base for 2025. The report highlights gaps including insufficient information on migration's impact on public services and government spending, inadequate population data by nationality and immigration status, and limited data on asylum seekers' journeys through the system. Other identified issues include unclear data on human rights claims in immigration cases, gaps in enforcement and returns statistics, unknown size of the unauthorised population, and insufficient official data linking migration and crime. The Observatory notes that while the UK maintains an "impressive suite of immigration statistics," structural problems with data siloes, disorganised databases and incomplete record-keeping continue to hinder comprehensive analysis. The report offers practical suggestions for improvement, including better linkage between different immigration datasets and more systematic publication of administrative data already collected by government departments.