Frequently Asked Questions
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How long can I stay outside the UK before applying to naturalise as a British citizen?
Generally, to apply for naturalisation as a British citizen, you need to prove 5 years’ residence without gaps outside the UK of more than a 450 days in total, and that you were not absent for more than 90 days in the last year before application.
If you are married to a British citizen, you need to prove 3 years' residence without gaps of more than 270 days in total, and again that you were not absent for more than 90 days in the final year.