Search the website | Search the catalogue

Complete the form below with as much information as possible if you are looking for

• a certificate of British citizenship issued in the UK between 1 January 1949 and 30 September 1986
• a certificate of naturalisation issued in the UK between 1 January 1981 and 30 September 1986

We will email you within ten working days to tell you if we have found any information and explain how to order copies.

For naturalisation certificates issued in the UK before 1 January 1981 and for those issued overseas before 1 January 1983, read our guide on Naturalised Britons to find out how to search our catalogue by name of applicant.

For naturalisation or British citizenship certificates issued after 1 October 1986, contact the UK Border Agency.

The vast majority of overseas certificates of British citizenship have not been selected for permanent preservation. Please contact British High Commission for more information.

* mandatory field

Your details

First name *

Last name *

Email address *

Certificate holder details

Please enter the details of the person who was issued with the certificate. Please note that for the protection of personal data, these details will not be retained by us.

First name *

Last name *

Country of birth *

Date of birth *

Certificate details

Please enter the details of the certificate below.

Country of issue

Certificate number if known

Year of registration (enter the year or year range, between 1949 and 1986 only)

Privacy statement

The National Archives takes your privacy seriously and we are committed to the responsible handling of personal information in accordance with our Information Charter. See our privacy policy for more details.