Form RS1: guidance
How to apply to become a British citizen again after giving up (renouncing) citizenship.
Documents
Details
Read the RS1 guidance to find out if you can apply to become a British citizen again after previously renouncing your British citizenship.
Updates to this page
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Updated the section on Good character.
Update history
2026-03-06 12:09
Updated the section ‘Travelling to and from the UK after becoming a British citizen’.
2025-04-29 13:44
Updated the section on Good character.
2025-04-17 15:26
Updated the following sections: ‘IAA and immigration advice’, ‘biometric enrolment’, ‘evidence of identity’, ‘travel after submitting an application’, ‘citizenship ceremonies’ and ‘next steps’. Added a new section: ‘will I get digital status showing I am a British citizen?’ Removed the ‘citizenship ban’ section.
2025-03-27 00:00
Amended to reflect that expired BRPs can be used for 18 months as ID after the expiry date.
2024-07-24 12:00
Updated Form RS1: guidance to update the section on ‘Citizenship ban’ to reflect changes as a result of the Illegal Migration Act 2023.
2023-10-04 00:01
Document format and style updated. Outdated information removed or updated accordingly. References and links to fees updated.
2023-07-27 16:43
Accessible version added.
2023-07-21 15:46
Updated to reflect changes introduced by the Illegal Migration Act 2023.
2022-02-17 09:29
Added accessible version of document.