United Kingdom citizenship: required documents

The documents you'll gather for United Kingdom citizenship by descent, by route and by ancestor. Your exact list is generated from your lineage in the wizard.

British citizenship / registration

Document how your British parent acquired citizenship and the chain to you, then apply for a passport or registration via UKVI.

You

•Your birth certificate

Your qualifying ancestor

•Your ancestor's birth certificate
•Proof of your ancestor's citizenship
•Marriage / birth records linking each generation

See if you qualify for United Kingdom citizenship

Check your eligibility — free

Not affiliated with UKVI or any government. A document-organization tool, not legal advice — always verify with the relevant authority.