Legitimacy and domicile: caseworker guidance
TellsGuidance HMabout Passportthe Officelaws staffon about legitimacy and domicile for customers born before 1 July 2006, where the claim to British nationality is through a father.
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This guidance tells HM Passport Office staff about the laws on legitimacy and advises how to confirm a customer, born before 1 July 2006, is the legitimate child of their father, for nationality purposes.
It also tells staff how to confirm where the customer’s father was domiciled, if needed, to establish a claim to British nationality.
Last updated 16
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Updated guidance published.
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Accessible version added.
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First published.
Update history
2026-01-12 15:11
Updated to explain how we send the customer the domicile questionnaire, make a minor terminology change in relation to DNA testing for British passport applications and remove references to Application Management System (AMS).
2025-02-05 10:38
This guidance has been updated: to better explain how legitimacy works in British nationality for people born before 1 July 2006 and includes examples to show this; to reflect a change of name for the Guidance team; to explain how we send the customer the domicile questionnaire.
2022-11-16 14:54
Updated guidance published.
2022-09-28 15:53
Accessible version added.
2022-04-08 10:30
First published.