Written Question·Home Office·UIN 102616

Undocumented Migrants

Tabled: 2 January 2026

Answered: 12 January 2026

Question

James McMurdock

Independent — South Basildon and East Thurrock

To ask the Secretary of State for the Home Department, what recent estimate she has made of the number of illegal migrants residing within the UK.

Answer

Alex Norris

By its very nature, it is not possible to know the exact size of the illegal population, or the number of people who arrive illegally, and so we do not seek to make any official or internal estimates of the illegal population. The latest position on this ...

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