The Migration Observatory informs debates on international migration and public policy.
Learn more about us
The Migration Observatory informs debates on international migration and public policy.
Learn more about us
Unauthorised migration in the UK
This briefing examines unauthorised migration—also known as ‘illegal immigration’ or ‘irregular migration’—in the UK.
Net migration to the UK
Covering the scale of immigration and net migration in the UK since the early 2000s
Labour’s pledges on migration: the data
Commentary explaining what the data do and do not tell us about the Labour government’s progress towards its goals as it begins implementing its plans.
report 17 Oct 2025
This report looks at how different immigration routes affect men and women, and how this has changed over time.
briefing 29 Sep 2025
commentary 26 Sep 2025
commentary 09 Sep 2025
commentary 05 Sep 2025
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Contact Us
T: +44 (0) 1865 612 375
E: migrationobservatory@compas.ox.ac.uk
Connections
This Migration Observatory is kindly supported by the following organisations.
The Migration Observatory, at the University of Oxford COMPAS (Centre on Migration, Policy and Society)
University of Oxford,
58 Banbury Road,
Oxford, OX2 6QS
commentary 30 Sep 2025
How do conviction rates and prison populations differ between British and foreign nationals?
This commentary outlines what available data can tell us on how convictions and prison populations compare for migrants and the UK population.