How to Apply for British Citizenship After ILR in 2025

Apply for British Citizenship

Why British Citizenship Matters

Gaining British citizenship is more than just a status upgrade. It gives you full rights and protections under UK law, including the right to vote, hold a British passport, and access services and benefits not available to temporary residents. For many, it’s the final step in making the UK their permanent home.

The Difference Between ILR and Citizenship

While Indefinite Leave to Remain (ILR) allows you to live and work in the UK indefinitely, it doesn’t grant the same privileges as full citizenship. You can’t vote in general elections or hold a British passport, and you may still be subject to immigration control in rare cases.

Eligibility Criteria for British Citizenship in 2025

Holding Indefinite Leave to Remain (ILR)

To apply for British citizenship, you must hold ILR for at least 12 continuous months unless you’re married to a British citizen. In that case, you can apply immediately after receiving ILR.

Residency Requirements

You must have:

Lived in the UK for at least 5 years before the application
Not spent more than 450 days outside the UK in those 5 years
Not spent more than 90 days outside the UK in the last 12 months

Good Character Requirement

The Home Office evaluates your criminal history, immigration breaches, and financial conduct. Even minor offences can lead to refusal, so honesty and transparency are key.

Knowledge of English and Life in the UK Test

Applicants must demonstrate English proficiency through an approved English language test or hold a degree taught in English. Additionally, you must pass the Life in the UK Test, which assesses your understanding of British culture, history, and laws.

Documents Required for British Citizenship Application

Personal Identification and Proof of ILR

Current passport and biometric residence permit
ILR letter or settlement status confirmation (e.g., via View and Prove Your Immigration Status)

Evidence of Residency and Travel History

Travel details for the last 5 years
Payslips, utility bills, or tenancy agreements showing UK residency

English Language and Life in the UK Test Certificates

SELT (Secure English Language Test) certificate
Life in the UK Test pass certificate

Step-by-Step Process to Apply for British Citizenship

Step 1: Ensure You Meet Eligibility

Check that you fulfill all the criteria, including ILR duration, residency, good character, and English proficiency.

Step 2: Prepare and Gather Required Documents

Keep all original and certified copies ready for upload during the application process.

Step 3: Complete Form AN Online

Fill out the AN Form online at the official UK Government website. The form includes sections on personal details, immigration history, employment, and references.

Step 4: Pay the Application Fee

As of 2025, the application fee is £1,580. This fee is non-refundable, even if your application is refused.

Step 5: Book and Attend a Biometrics Appointment

You’ll be asked to visit a UKVCAS centre to provide fingerprints and a photo.

British Citizenship Fees in 2025

Application Fee Breakdown

Application processing: £1,580
Biometric enrolment: £19.20

Additional Costs to Consider

English test: ~£150
Life in the UK Test: £50
Document translations, if applicable

What Happens After You Apply

Home Office Processing Times

The standard processing time is 3–6 months, though complex cases can take longer.

Receiving the Decision Letter

If approved, you’ll receive an invitation to attend a citizenship ceremony. If refused, the Home Office will explain why and whether you can appeal.

British Citizenship Ceremony

What to Expect at the Ceremony

You must attend a ceremony within 3 months of receiving your invitation. You’ll take an Oath or Affirmation of Allegiance and pledge loyalty to the UK.

Receiving the Certificate of Naturalisation

At the end of the ceremony, you’ll receive your official certificate of naturalisation, which is essential for applying for a UK passport.

Common Reasons for Citizenship Refusal

Failing the Good Character Requirement

Criminal records, unpaid taxes, or dishonest information can lead to refusal.

Gaps in Residency

Too many days outside the UK without valid explanations or proof can disqualify you.

Incomplete Documentation

Missing documents or poor-quality uploads often delay or ruin an otherwise strong application.

Tips for a Successful Application

Double-Check Eligibility

Before applying, ensure you meet all the updated 2025 requirements.

Seek Legal Advice if Unsure

Consult an OISC-registered immigration advisor for complex cases or past visa issues.

British Passport Application After Citizenship

Applying for Your First UK Passport

Once you’ve received your naturalisation certificate, you can apply for a British passport through the official GOV.UK portal. Processing typically takes 3–6 weeks.

Dual Nationality Considerations

Can You Hold Two Passports?

Yes, the UK allows dual nationality, but your home country may not. Check with your national embassy before applying.

How to Track Your Application

Using the UKVI Online Tracking Tool

You can check application updates via UKVI account, and you may also receive email or SMS updates.

Internal Links Section

External Resources

Disclaimer

This article is intended for informational purposes only and does not constitute legal advice. Immigration rules are subject to change. Always consult the official UK government sources or an accredited immigration advisor for the most accurate and up-to-date information.

Conclusion

Securing British citizenship after ILR is a life-changing milestone. While the process in 2025 remains detailed and document-heavy, with the right preparation, you can navigate it confidently. Whether you’re looking to deepen your roots in the UK or open doors internationally with a British passport, taking this final step is worth every effort.

FAQs

1. Can I apply for British citizenship immediately after getting ILR?
Only if you’re married to a British citizen. Otherwise, you must wait 12 months.

2. Is the Life in the UK Test mandatory in 2025?
Yes, unless you’re exempt due to age or specific medical conditions.

3. What happens if my application is refused?
You may be given a chance to appeal or reapply, depending on the reason for refusal.

4. Can I travel while my application is being processed?
Yes, but you must not exceed the absence limit, and you may need to be available for your biometrics appointment.

5. Is dual citizenship allowed in the UK?
Yes, but check your home country’s laws before proceeding.