A United Kingdom (UK) national may prove their nationality status in several ways, as UK citizenship can be acquired by birth, descent, registration, or naturalisation. The list below presents the catalogue of accepted evidence of nationality status, as compiled by the Office for Foreigners (UDSC) in consultation with the UK Home Office:
British Citizens (excluding those from the Channel Islands and the Isle of Man)
• A British citizen passport issued by HMPO (His Majesty’s Passport Office, formerly UKPA) or by CSRO (the Civil Status and Registration Office) in Gibraltar
OR
• Certificate of Naturalisation;
• Certificate of Registration;
• Birth certificate indicating birth in the UK before 1 January 1983;
• Birth certificate indicating birth in the UK after 1 January 1983, along with evidence that one parent was settled in the UK or held British citizenship at that time;
• Evidence of birth outside the UK where one parent was born in the UK;
• A foreign passport with a Certificate of Entitlement to the Right of Abode, issued under Section 2(1)(a) of the Immigration Act 1971
British Overseas Territories Citizens (BOTCs), whose citizenship is connected with Gibraltar
• A BOTC passport with the word “Gibraltar” on the cover, issued by CSRO
OR
• A Certificate of Naturalisation or Registration as a BOTC (British overseas territories citizens) from Gibraltar;
• Birth certificate indicating birth in Gibraltar before 1 January 1983;
• Birth certificate indicating birth in Gibraltar after 1 January 1983, along with evidence that a parent was settled in Gibraltar or held BOTC status at that time;
• Evidence of birth outside Gibraltar, where a parent was born in Gibraltar.
Stateless persons under the British Crown entitled to reside in the UK under section 2 of the Immigration Act 1971
• A stateless person passport with a Certificate of Entitlement to the Right of Abode, issued by HMPO
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