Gentili Stark
Gentili Stark

British Citizenship

Becoming a British citizen is the final step in making the United Kingdom your permanent home. It is not an automatic right but an important privilege that carries legal responsibilities and benefits — from the right to vote and hold a British passport to complete freedom from immigration control.

At Gentili Stark, our British Citizenship Solicitors in London have over 20 years of experience guiding individuals and families through complex nationality applications. Whether you are applying for yourself or on behalf of your child, we provide clear advice, meticulous case preparation, and friendly support from start to finish.

At a Glance: Eligibility Requirements

  • Have lived in the UK lawfully for at least 5 years (or 3 years if married to a British citizen)
  • Hold Indefinite Leave to Remain, Settled Status, or Permanent Residence for at least 12 months
  • Are of good character and have no serious immigration or criminal issues
  • Have passed the Life in the UK Test
  • Meet the English language requirement (B1 CEFR or higher, or UK degree taught in English)

Routes to British Citizenship

Naturalisation

Most adults become British citizens through naturalisation. This route applies once you have achieved settled status or ILR and meet the residence and character requirements. Our solicitors will guide you through proving your residence, preparing your documents, and ensuring you meet all statutory tests before submission.

Registration of a Child

Children under 18 can obtain citizenship through registration. The rules differ depending on where and when the child was born, and whether the parents were settled or British at the time. We assist with applications under sections 1(3), 1(4), and 3(1) of the British Nationality Act 1981, ensuring each child’s connection to the UK is clearly demonstrated.

Citizenship by Descent

A person born outside the UK may automatically be British if one of their parents is British 'otherwise than by descent'. We help confirm your entitlement and gather the necessary documentary evidence — birth certificates, passports, and proof of parentage.

Citizenship by Birth

Children born in the UK are not always British automatically. We advise families on when a child qualifies immediately at birth and when registration is required — for instance, once a parent becomes settled in the UK.

Citizenship by Marriage or Civil Partnership

If you are married to, or in a civil partnership with, a British citizen, you may apply after 3 years’ residence in the UK instead of 5. You must still meet the Life in the UK and English language requirements, as well as demonstrate good character.

BNO and Hong Kong Nationals

We regularly assist BNO status holders and their family members seeking to transition from the BNO visa to British citizenship. Our team ensures smooth coordination between your ILR stage and naturalisation eligibility.

Dual Citizenship and Renunciation

The UK permits dual citizenship, meaning you can hold your original nationality while becoming British. However, not all countries allow this, so we recommend checking with your embassy before applying. We can also assist with renunciation if you wish to give up British citizenship for personal or legal reasons.

Deprivation of Citizenship

In rare cases, citizenship can be withdrawn due to fraud or national-security concerns. If you receive such a notice, seek urgent legal advice. Our solicitors can assist with appeals and judicial reviews.

Life in the UK and English Language Tests

Applicants must prove sufficient knowledge of English and British life.

  • Life in the UK Test: a computer-based test of 24 questions covering British values, history, and culture.
  • English language: proof via a recognised B1 exam, or an undergraduate/postgraduate degree taught in English.

We advise on accepted test providers, exemptions, and how to prepare effectively.

How We Can Help

Our London-based citizenship solicitors provide end-to-end guidance — from eligibility checks and document collation to application submission and post-decision support. We also assist with appeals, judicial reviews, and complex cases, including those involving long residence or absences from the UK.

Success story: We recently helped a family from Italy secure British citizenship after 12 years in the UK, despite complex absences and missing records.

What our clients say

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I just wanted to say thank you for your help with the British citizenship.
You were very helpful and communicated well with me and made me feel at ease. You were with me all through the process. Thank you
I would recommend this solicitor for help with becoming a British citizen

Dorothy Quaye
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Stephane is the most considerate person and ensures that cases win. He explains every step of the process throughly and makes sure that I understand decisions I make to the highest extent. He also charges a reasonable price for the high level of work done. Moreover Stephane is a kind individual who makes everything understandable and easy to follow. Knowing that Stephane is handling a case is very reassuring. He is the reason why I can live with my son.

Prashanty
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I cannot recommend Gentili-Stark enough they spent time on my case, they advised me each step of the way while also preparing all the necessary documents.
They always explained all the steps clearly, all the communication was spot-on and without any delay. I recommend getting in touch with them, truly a fast, friendly & very professional team.

Marc
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As a writer of expert medico-legal reports in the immigration and asylum context, I have worked with Stephane Gentili over several years. I have been very impressed both by his commitment to his clients and by the thoroughness of his work. 

Professor Cornelius Katona MD FRCPsych
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Thank you so much for all the work you did on my case, if it wasn’t for you, I wouldn’t be in the position I’m in today. Your dedication makes you the best lawyer I’ve ever come across and I just want to thank you so so much.

Ijeoma and Family

Why with us?

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We are here for you. You can call us outside office hours. We can give you peace of mind.
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We have specialised in UK immigration law for 20 years.
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We will take the time to get to know you to find the right legal solution for you.
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We have happy clients. Our success rate is very high.
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There are no surprises. Our fees are transparent and agreed upon with you before we start working.
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We are professionals. We are authorised by The Solicitors Regulation Authority.

Get in touch

Contact us to see how we can help you.
One of our team members will contact you within 24 hours.
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