United Kingdom
ISO2: GB
UK citizenship by naturalisation through lawful residence: standard 5-year route (typically with 12 months settled status/ILR) and 3-year route for spouses/civil partners of British citizens, residence/absence rules, English language (CEFR B1+) and Life in the UK test, biometrics via UKVCAS, required documents, submission workflow, official sources, and dual citizenship policy (as of 2026).
Passport
Citizenship by residence
- Minimum years of residence
- 5.0
- Requires permanent residence
- Yes
- Last updated
- Feb. 28, 2026
- Notes
- Standard adult naturalisation typically requires 5 years lawful residence in the UK and being free from immigration time restrictions at the date of application (for the standard route this is usually required for at least 12 months; spouses/civil partners of British citizens generally use a 3-year route without the 12-month “free from time restrictions” period). Applicants must normally meet residence/absence limits (commonly: <=450 days absent in 5 years and <=90 days absent in the last 12 months; spouse route commonly: <=270 days absent in 3 years and <=90 days absent in the last 12 months). Applicants must also meet knowledge of language and life in the UK requirements (English at CEFR B1+ unless exempt, plus Life in the UK test), provide referees, and attend a biometrics appointment through UKVCAS. The Home Office also applies “good character” and other policy requirements per Guide AN.
- Dual citizenship
-
Dual citizenship: Allowed
Renunciation required: No
- Notes for dual citizenship
- The UK allows dual/multiple citizenship and does not require renunciation of your existing citizenship to become British. However, your other country may restrict dual nationality—check that country’s rules.
Qualifying residence permits
EU Settlement Scheme: Settled status
Settled status is a form of being free from immigration time restrictions for naturalisation purposes. Evidence is typically digital status plus identity document(s). See Home Office Guide AN and GOV.UK naturalisation guidance.
Counts
Indefinite Leave to Remain (ILR) / Indefinite Leave to Enter (ILE)
Settlement status (free from immigration time restrictions). Standard route generally expects settled status/ILR at application and commonly for 12 months (unless spouse/civil partner route). See Home Office Guide AN and GOV.UK naturalisation guidance.
Counts
Limited leave to remain (work/study/family routes)
Periods of lawful residence under limited leave can count toward the qualifying residence period, but applicants must be free from immigration time restrictions (settled) by the time they apply to naturalise.
Counts
Visitor / short-stay permission
Visitor status is not a residence route to naturalisation and does not normally support the lawful-residence residence clock for naturalisation.
Doesn’t count
Required documents
| Document | Mandatory | Notes |
|---|---|---|
|
English language proof (CEFR B1 or higher)
Evidence of English language ability at CEFR B1+ (approved test or eligible degree taught/researched in English), unless exempt.
|
Mandatory | Must prove English at CEFR B1+ (B1, B2, C1, or C2) or qualifying degree, unless exempt under GOV.UK rules. |
|
Life in the UK Test pass reference
Unique reference number after passing the Life in the UK test (required for citizenship/settlement applications).
|
Mandatory | Must provide the Life in the UK unique reference number (or older test reference ID if taken pre-17 Dec 2019). |
|
Passport(s) and travel history
Current and expired passport(s)/travel documents used to evidence identity and absences/travel history.
|
Mandatory | Used to evidence identity and absences. The Home Office assesses residence/absence rules during the qualifying period. |
|
Proof of settlement (ILR/ILE/Settled status)
Evidence that the applicant is free from immigration time restrictions at the date of application (ILR/ILE or EU settled status).
|
Mandatory | You must be free from immigration time restrictions at the date of application (and usually for 12 months on the standard 5-year route; spouse route differs). |
|
Proof of UK residence and absences
Evidence supporting lawful residence and meeting the residence/absence limits (addresses, employment/tenancy records, etc., as applicable).
|
Mandatory | Evidence supporting that you meet residence requirements and have not exceeded absence thresholds. |
|
Referees declarations (Form AN)
Referee details/declarations required as part of the naturalisation application.
|
Mandatory | Referees are required for Form AN; provide details per Home Office guidance. |
|
UK naturalisation (Form AN) application
Adult naturalisation application process (“Form AN”), typically submitted online via GOV.UK (with UKVCAS biometrics step).
|
Mandatory | Adult naturalisation application, typically submitted online via GOV.UK; you will complete the Form AN flow and pay fees. |
|
UKVCAS biometrics appointment record
Fingerprints and photo provided at a UKVCAS service point; documents can be uploaded online or scanned at appointment.
|
Mandatory | You’ll usually attend a UKVCAS appointment to provide biometrics; documents can be uploaded or scanned at appointment. |
|
Marriage/civil partnership certificate (if spouse route)
Evidence supporting spouse/civil partner route, where applicable.
|
Optional | Required only if applying under the spouse/civil partner route. |
Submission offices
GOV.UK – Apply for British citizenship (naturalisation)
Online
Naturalisation applications are typically completed online; supporting documents can be uploaded to the online service or scanned at the biometrics appointment.
GOV.UK – Book the Life in the UK Test
Online
Official booking service for the Life in the UK test, required for citizenship/settlement (unless exempt).
UKVCAS – Biometrics (fingerprints and photo) service points
NATIONAL
Applicants usually attend a UKVCAS service point appointment to provide biometrics; documents can be uploaded online or scanned at the appointment.
Official sources
GOV.UK – Dual citizenship (UK)
Government
Official statement that dual citizenship is allowed in the UK; no need to apply to “keep” British citizenship when acquiring another.
en
GOV.UK – English language requirement for citizenship/settlement (CEFR B1+)
Government
Official guidance: English can be proved by approved qualification at B1/B2/C1/C2 or an eligible English-taught degree; includes exemptions.
en
GOV.UK – Life in the UK Test (booking and requirement)
Government
Official booking service and overview for the Life in the UK test required for citizenship/settlement.
en
GOV.UK – Naturalise if you have ILR (5-year route): eligibility
Government
Official eligibility overview for naturalisation where the applicant has ILR/settled status; includes residence requirement basics.
en
GOV.UK – Naturalise if your spouse/civil partner is British (3-year route)
Government
Official spouse/civil partner naturalisation route overview (3-year residence and settlement requirement at application).
en
GOV.UK – UKVCAS biometrics appointments and document upload
Government
Official process for biometrics appointment and document upload/scanning for visa/citizenship applications.
en
Home Office – Guide AN (Feb 2026)
Government
Home Office guidance summarising legal and policy requirements for naturalisation (residence/absence rules, lawful residence, settlement timing, good character, etc.).
en
Latest ranking snapshot
As of Feb. 28, 2026
- Travel freedom182.00
- Residency rights1.00
- Quality of life175.90
- Economic freedom69.30
- Tax friendliness20.00
Composite ranking based on travel freedom (visa_free), residency rights score, quality of life index, economic freedom index, taxation score, and net salary (USD) as per passport_composite_ranking_top150.csv.