Form

Application to register as British citizen: form RS1

Form to apply to become a British citizen again after giving up (renouncing) citizenship.

Documents

Application for registration as a British citizen by a person after renunciation: form RS1

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Guidance on registering as a British citizen using form RS1 after making a declaration of renunciation

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Detail

Use this form if you previously renounced your British citizenship and now want to get it back. You should also read the guidance.