GLA Demography

This page contains results of recent projections produced by the GLA that have been designated as research outputs rather than as a full entry in the GLA's annual series of projections. **Update - 29 May 2026** An updated set of trend-based projection outputs have been added. These include adjustments to the underlying estimates of population and international migration of children to address...

This is a collection of presentations given by members of the GLA Demography team at external conferences and seminars. The majority of these were delivered at conferences and day meetings held by the British Society of Population Studies (BSPS). An archive of presentations from Population Statistics User Group meetings is available here.

This page contains input data sources and output projections for the Sub-regional Pupil Projections. The input data sources provided on this page are the school numbers data from the school census, at school-level, Local Authority level, and Subregion level (ITL Level 2). The births data used for these projections can be found here. The output projections are at Subregion, Region, and England...

Time series of official live birth estimates for local authority districts and selected higher geographies in England and Wales from 1991-92 onward. Data are collated from the following sources: ONS mid-year population estimates components of change - local authority births for mid-year periods from 2001-2 onward Births and deaths...

The GLA recently published a briefing examining the demographic evidence around trends in the population of young children (age 0 to 10) in London, see London’s population of young children – current and future. These three new data hubs supplement the briefing by enabling users to access current data and trends at borough level. They are intended for those working in...

Templates for the submission of data for use in the GLA School Roll Projection Service Notes on completing the Actual Roll templates: Subscribers should use the templates included on this page to provide roll data for individual schools. This data should be split by national curriculum year and gender. Data for primary and secondary schools should...

This briefing summarises trends in applications for the (BN(O) route since it was introduced on 31 January 2021 until the end of March 2023.

This briefing summarises trends in National Insurance number applications from London residents since 2016. It examines the most frequent nationalities represented in recent data, and compares these nationalities with those applying from the whole of the UK.

This report summarises trends in new applications for the EUSS, outcomes from applications, the most frequent nationalities of London residents applying, and the distribution across London of number of applications and major origin nationalities.