Modelled estimates of annual live births by year ending date. Official birth estimates from ONS are considered very accurate, but the lag between the end of the period covered and the publication of estimates is typically 9-12 months. To gain a more timely indication of birth trends, the GLA Demography team produces modelled estimates of annual births...

Modelled counts of patients registered at a GP practice by single year of age (0-95+), sex, and local authority of residence. These modelled data contain information from NHS Digital, licenced under the current version of the Open Government Licence: Counts of patients by practice attended x sex x LSOA of residence - currently published quarterly Counts of...

Updated: 14/05/2025 Summaries of estimated annual internal migration flows of children aged 0 to 15 for London local authorities. Outputs are based on detailed estimates of internal migration published by the Office for National Statistics. Data for year ending mid-2023 are currently based on modelled flows produced by the GLA.

These modelled annual population estimates were created for use the GLA's population projections. They are intended to provide a consistent series of annual population and components of change between census years with all change accounted for by the standard components of change (births, deaths, and migration). The official mid-year population estimates published by ONS are available here. The original detailed internal migration data...

Estimated age specific fertility rates for local authorities, ITL (level 2) subregions, and regions in England and Wales. Rates modelled by the GLA using published ONS data on births by age of mother and annual population estimates. All data is published on 2021 geographic boundaries.

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...

The Office for National Statistics (ONS) publishes data on the number of live births by the mother's country of birth in England and Wales each year. Every time a birth is registered in England and Wales both parents are required to state their places of birth on their child's birth certificate, and this information is then...

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 is currently developing updated household projection models for use in its 2023-based projections. This page will initially contain raw input data to the projections, with processed data, calculated rates, draft outputs, and links to code being added as development progresses. Inputs: Census estimates of population usually resident population by age, sex, local authority, and residence type. Census estimates...

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...