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Guidance

National Insurance number allocations to adult overseas nationals: background information and methodology

Summary of the methodology used to produce statistics on National Insurance number allocations to adult overseas nationals.

Updates to this page

From:
Department for Work and Pensions
Published:
30 March 2011
Last updated:
27 February 2025
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  1. The background information and methodology has been revised throughout. The latest release of 'National Insurance numbers allocated to adult overseas nationals' statistics has also been published today (27 February 2025).

  2. The background information and methodology has been revised throughout. The latest release of 'National Insurance numbers allocated to adult overseas nationals' statistics has also been published today (28 November 2024).

  3. Updated 'NINo allocations to adult overseas nationals entering the UK: background information and methodology'. Changed 'Micronesia' to 'Federated States of Micronesia'.

  4. Added a new table showing the World area reporting structure – subgroups and nationalities. Also updated the sections about operational differences during the COVID-19 pandemic, EU exit, and Geocoding. The latest release of National Insurance numbers allocated to adult overseas nationals statistics has been published today (Thursday 23 November 2023).

  5. The background information and methodology has been revised throughout. The latest release of 'National Insurance numbers allocated to adult overseas nationals' statistics has also been published today (24 August 2023).

  6. The background information and methodology has been revised throughout. The latest release of 'National Insurance numbers allocated to adult overseas nationals' statistics has also been published today (23 February 2023).

  7. Added new sections about exit from the European Union and National Statistics badging. Also updated the information about migration statistics and the impact of coronavirus (COVID-19). The latest release of National Insurance numbers allocated to adult overseas nationals statistics has also been published today (Thursday 27 May 2020).

  8. Revised version — updated to: (1) reflect changes in the supply of Migrant Workers data to the Office for National Statistics (ONS), and (2) make users aware the Migration Statistics Quarterly (MSQR) Report is no longer published by the ONS and this Background Information and Methodology document will be accordingly updated once a replacement publication for the MSQR is complete.

  9. Revised version (February 2019) - Updated to reflect the change from geographies based on Census 2001 Output Areas to geographies based on Census 2011 Output Areas - page 9.

  10. Revised version - the useful links on pages 11 and 12 of the document have been updated. The revised version is still dated February 2017.

  11. Revised version, dated February 2017.

  12. First published.

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NINo allocations to adult overseas nationals entering the UK: background information and methodology

Ref: ISBN 978-1-78659-250-7

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This publication provides a summary of the methodology used to produce the statistics on National Insurance number (NINo) allocations to adult overseas nationals.

National Insurance number is sometimes shortened to NINo in Department for Work and Pensions (DWP) statististical publications.

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