The data cover overseas nationals allocated a National Insurance Number (NINo) on the National Insurance Recording System (NIRS). The figures cover overseas nationals allocated a NINo for whatever reason i.e. the figures cover benefit/tax credit recipients as well as workers. All overseas nationals allocated a NINo are included, regardless of their length of stay in the UK.
https://www.gov.uk/government/collections/national-insurance-number-allocations-to-adult-overseas-nationals-entering-the-uk
Source: Department for Work and Pensions (DWP)
Publisher: Department for Work and Pensions (DWP)
Geographies: Local Authority District (LAD), County/Unitary Authority, Government Office Region (GOR), National, Parliamentary Constituency
Geographic coverage: Great Britain
Time coverage: 2002 - current
Type of data: Administrative data