<p>The Home Office publishes data on citizenship in the ‘<a href="https://www.gov.uk/government/collections/immigration-statistics-quarterly-release" target="_blank">Immigration Statistics Quarterly Release</a>’. Data on naturalisations and registrations broken down by age group are published in table Cit_D02 of the ‘<a href="https://www.gov.uk/government/statistical-data-sets/immigration-system-statistics-data-tables#citizenship" target="_blank">Citizenship detailed datasets</a>’. Age breakdowns from 2021 onwards cannot currently be provided due to ongoing work to transition underlying systems that are used to produce the data.</p><p> </p><p>Information on how to use the dataset can be found in the ‘Notes’ page of the workbook. The latest data relates to the year ending December 2023.</p><p> </p><p>Information on future Home Office statistical release dates can be found in the ‘<a href="https://www.gov.uk/search/research-and-statistics?keywords=immigration&content_store_document_type=upcoming_statistics&organisations%5B%5D=home-office&order=relevance" target="_blank">Research and statistics calendar</a>’.</p>