British Citizenship Applications — Naturalisation & Registration
British citizenship is the highest immigration status available in the UK. LegumLex provides expert guidance through naturalisation, registration, and citizenship by descent.
Updated
What Is British Citizenship?
British citizenship is the highest immigration status available in the UK — it grants you the right to hold a British passport, vote in all UK elections, and remain in the UK permanently with no immigration conditions.
Routes to British Citizenship
Naturalisation
The most common route for settled overseas nationals.
Requirements:
- Indefinite Leave to Remain (or settled status) at the time of application
- At least 12 months’ continuous residence with ILR (5 years for most work routes, plus 1 year with ILR)
- For spouses of British citizens: 3 years continuous residence
- Pass the Life in the UK Test
- English language at B1 CEFR level
- Good character requirement
- Usually no more than 450 days absent in five years (270 days in three years for a British citizen’s spouse), and 90 days in the final year; residence on the exact qualifying start date also matters
Registration as a British Citizen
Available to specific categories, including:
- Children born in the UK to a British or settled parent (in some circumstances)
- Minor children of British citizens
- Certain adults with a historical entitlement
- Former British overseas territories citizens and British nationals (overseas)
Citizenship by Descent
British citizenship can sometimes be claimed by individuals born outside the UK to a British parent — depending on the parent’s own citizenship status and how they acquired it. Citizenship by descent can only be passed on for one generation in most circumstances.
British Citizenship for EEA Nationals
EU, EEA, and Swiss nationals who have acquired Settled Status under the EU Settlement Scheme are eligible to apply for naturalisation after the standard qualifying period.
Application Process
- Confirm eligibility (we advise on this in the initial consultation)
- Pass Life in the UK Test
- Complete Form AN (naturalisation) or relevant registration form
- Submit documents and pay fee
- Attend citizenship ceremony (for naturalisation applicants)
Processing time: Typically 6+ months. UKVI is currently operating at extended timescales.
How LegumLex Helps
The most common reasons for a citizenship refusal are avoidable: miscounted absences, an overlooked good-character issue, or applying before the qualifying period is complete. We confirm your eligibility, calculate your absences, review your immigration and tax history for good-character concerns, and prepare the application in full — so you apply once, correctly.
Government Fee
Government charges depend on the application and can change. Check the current GOV.UK fees and application guidance, including any health surcharge and optional priority service, before paying.
See our fees page for professional fee information.
Official Guidance
Common Questions
How long after ILR can I apply for British citizenship?
Most applicants can apply for naturalisation 12 months after being granted Indefinite Leave to Remain or settled status. Spouses of British citizens can usually apply as soon as they hold ILR, provided the three-year residence requirement is met.
How many days can I be absent from the UK before applying?
The usual limits are 450 days in five years, or 270 days in three years for spouses of British citizens, and 90 days in the final year. Discretion and additional residence conditions may apply. We review your travel history and advise on timing.
Will I lose my current nationality if I become British?
The UK permits dual nationality, but whether you keep your existing citizenship depends on that country's law. We can flag the issue, but you should confirm with the authorities of your home country.
Do I need to pass any tests?
Most applicants aged 18–64 must pass the Life in the UK Test and meet the English language requirement at B1 CEFR level or above, unless exempt.
This page provides general information about British Citizenship and does not constitute legal advice. For advice specific to your circumstances, please contact us for a consultation.
Ready to Become a British Citizen?
We offer a short initial call, free of charge, to understand your enquiry and explain how we can help. Where detailed advice or a document review is required, we offer a paid consultation and confirm the fee beforehand.