Naturalisation: Getting UK Citizenship
Legal advice and representation for adults applying for British citizenship
Naturalisation is the formal process for adults who are not British citizens to become British citizens through residence and good character. If you meet the eligibility criteria, you can apply to the Home Office to be granted citizenship.
At Immigration Solicitors UK (ISUK), we guide individuals and families through every stage of the British naturalisation process, from checking eligibility to preparing the application and assistance with attending the citizenship ceremony.
Becoming a British citizen gives you full rights in the UK, including the right to vote, work without restriction, and apply for a UK passport.
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Legal advice and representation for adults applying for British citizenship
Naturalisation is the formal process for adults who are not British citizens to become British citizens through residence and good character. If you meet the eligibility criteria, you can apply to the Home Office to be granted citizenship.
At Immigration Solicitors UK (ISUK), we guide individuals and families through every stage of the British naturalisation process, from checking eligibility to preparing the application and assistance with attending the citizenship ceremony.
Becoming a British citizen gives you full rights in the UK, including the right to vote, work without restriction, and apply for a UK passport.
How We Can Help
Our experienced immigration solicitors will:
- Confirm your eligibility for naturalisation.
- Check your residence and immigration history to make sure you qualify.
- Help you prepare a complete application using Form AN.
- Review your supporting documents to prevent common errors.
- Communicate with the Home Office on your behalf until a decision is made.
Our aim is to make a complex process straightforward, transparent, and stress-free.
To apply for British citizenship by naturalisation, you must usually:
- Have lived in the UK legally for at least five years (or three years if married to a British citizen).
- Hold Indefinite Leave to Remain (ILR), permanent residence, or settled status under the EU Settlement Scheme.
- Have held ILR or settled status for at least 12 months before applying, unless you are married to a British citizen.
- Have spent no more than 450 days outside the UK in the last five years and no more than 90 days outside the UK in the final year before applying.
- Pass the Life in the UK Test and demonstrate English language proficiency (B1 or higher).
- Be of good character.
The Good Character Requirement
Applicants must be able to show that they are of good character. This means no serious criminal convictions, no ongoing investigations, no immigration offences, and no history of dishonesty or deception.
As of February 2025, the Home Office will normally refuse applications from anyone who entered the UK illegally unless they were under 18 at the time or are recognised victims of trafficking.
Our solicitors can review your history before applying to help reduce the risk of refusal.
English Language and Life in the UK Tests
You must pass the Life in the UK test and prove your English proficiency with an approved qualification (B1 level or above).
You are exempt if you are from a majority English-speaking country, are over 65, or have a long-term medical condition that prevents you from taking the test.
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Your application must include accurate, up-to-date evidence of your residence, identity, and immigration status. Common documents include:
- Passport and biometric residence permit (BRP).
- Proof of settled status or ILR decision letter.
- Council tax or utility bills, P60s, tenancy agreements, or NHS letters showing continuous residence.
- Life in the UK test certificate and English language qualification.
- Two referees who have known you for at least three years and can confirm your identity and good character.
ISUK can help you organise and verify your evidence before submission, reducing the chance of delay or refusal.
You can apply online or by post using Form AN. The typical steps are:
- Confirm eligibility and timing of your application.
- Gather supporting documents.
- Submit Form AN and pay the Home Office fee.
- Provide biometric information when invited.
- Wait for a decision and attend your citizenship ceremony.
The current Home Office fee (as of December 2025) is £1,500, including the £130 ceremony fee.
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The Home Office normally takes three to six months to process a naturalisation application.
Delays can occur if information is missing or further checks are needed.
A solicitor can ensure your application is accurate and complete from the start, helping avoid unnecessary waiting or requests for more documents.
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What We Offer
Our Services
we understand that immigrating to a new country is a significant
decision that comes with its own set of challenges.
Family Visas
Partner Visas
Settlement in the UK
Settlement of EEA Nationals
British Citizenship and The Right of Abode
Challenge a Refusal
Removals/Deportations
Asylum/Human Rights
Sponsor License for a UK Business
UK Business Visas
Student Visas
Popular Work Visas
Other work visas and permits
Visas without a job offer
Work for an overseas employer
Temporary work visas
UK Visit Visas
Why Choose Immigration Solicitors UK
- Regulated by the Solicitors Regulation Authority (SRA).
- Fixed-fee naturalisation services with clear costs.
- Extensive experience with both straightforward and complex applications.
- Dedicated solicitor support from start to finish.
We take the time to understand your personal background, address any potential issues early, and prepare a strong, well-presented application.
Speak to Our Citizenship Solicitors
If you are ready to apply for British citizenship or would like to confirm your eligibility for naturalisation, contact Immigration Solicitors UK today.
Call 00442081661898 or complete our online enquiry form to book a consultation with one of our specialist immigration solicitors.
We will explain your options clearly, help you prepare your application properly, and support you until your citizenship is granted.
