Source: Office for National Statistics - International Passenger Survey, Home Office - long-term work visas, Department for Work and Pensions - National Insurance number registrations to adult overseas nationals

Notes:

1. NINo registrations are for all National Insurance number registrations regardless of length of stay or date of arrival so will include short-term migrants and people who may have been in the country a while before registering.
2. Visa data are Home Office entry clearance visas granted for 12 months or more for main applicants only.

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