This page explains who you should contact if you have questions about British citizenship and right of abode.
You can download application forms and guides from the Applying section.
We have also published a series of leaflets on nationality-related topics. You can download these from our Information leaflets page.
If you are a UK resident and you have a question about British citizenship or right of abode, that is not answered by our guides and leaflets, you can phone or email our nationality contact centre (see under 'Contact' on the right side of this page). If you email us, we may take up to 10 days to respond to your message.
If you live in the Channel Islands or the Isle of Man, you should contact the Lieutenant Governor's office.
If you live in a British overseas territory, you should consult the Governor's office.
If you are elsewhere overseas, you should contact the appropriate British diplomatic post.
You can telephone direct from abroad on +44 151 672 5626. Phone lines are open 09:00 to 17:00 Monday to Friday, excluding public holidays.
If you want to request a duplicate certificate for a grant of citizenship (citizenship of the UK and colonies or British subject status) made from October 1986, you should use our certificate request form. You can find this form under 'Related documents' on the right side of this page.
We do not retain records of the grant of British citizenship before October 1986.
Duplicate certificates of registration (from January 1949 to October 1986) and of naturalisation (from 1870 to May 1969) are held by the National Archives. To find out how to obtain certified copies of these certificates, visit the National Archives website.
Duplicate certificates of naturalisation between June 1969 and October 1986 are not available, as they have not been retained.