British Citizenship & Naturalisation Help

British Citizenship · IAA-regulated advice in Birmingham and London

British citizenship, step by step

Naturalisation, citizenship by marriage, descent or birth, and registering a child. We check your eligibility, including residence and absences, and prepare the application with you.

Overview

What is British Citizenship?

British Citizenship is a nationality, not an immigration status, in the United Kingdom, granting you the full rights and privileges of a British national. For most adults, it is the step after Indefinite Leave to Remain (ILR) or settled status and signifies a permanent commitment to the UK.

Individuals can become British citizens through several routes, most commonly by naturalisation, birth, descent, or marriage to a British citizen. Becoming a citizen allows you to live, work, and vote in the UK without any immigration restrictions.

Side by side

Compare British citizenship and naturalisation routes

A short summary of the main ways to become, or confirm you already are, a British citizen. The rules turn on dates and family history, so check with us before applying.

British citizenship by birth Who it’s forBorn in the UK on or after 1 January 1983 when a parent was British or settled here (or, from 13 January 2010, in the UK armed forces). Residence neededNone. It depends on a parent’s status at the time of birth. Tests and waitNo tests and no application. Apply for a passport or status letter. Key points
  • Born in the UK before 1983: usually British, with rare exceptions
  • Parent later becomes British or settled: child can register while under 18
  • Lived in UK for first 10 years (max 90 days away yearly): can register
Full guide: British citizenship by birth
British citizenship by descent Who it’s forBorn outside the UK to a parent who was British otherwise than by descent, for example born or adopted in the UK, or naturalised. Residence neededNone. Citizenship usually passes automatically, but only to one generation born abroad. Tests and waitNo tests. Apply for a passport or status letter. Key points
  • Parent British by descent: child may register while under 18
  • Those routes need 3 years in the UK, with at most 270 days away
  • Child registration fee: £1,000
Full guide: British citizenship by descent
British citizenship by marriage Who it’s forAdults married to, or in a civil partnership with, a British citizen, who hold ILR, settled status or indefinite leave to enter. Residence needed3 years in the UK; max 270 days away, 90 in last 12 months* Tests and waitLife in the UK test and English B1. No 12-month wait after ILR. Key points
  • Fee £1,709 plus £130 citizenship ceremony (£1,839 in total)
  • You must have been in the UK exactly 3 years before applying
  • Not available if your British partner has died; other routes may be
Full guide: British citizenship by marriage
British naturalisation Who it’s forAdults with ILR, settled status or indefinite leave to enter who intend to keep living in the UK. Residence needed5 years in the UK; max 450 days away, 90 in last 12 months* Tests and waitLife in the UK test, English B1, and usually 12 months after ILR. Key points
  • Fee £1,709 plus £130 citizenship ceremony (£1,839 in total)
  • Must be of good character and not in breach of immigration laws
  • You must have been in the UK exactly 5 years before applying
Full guide: British naturalisation
Registration of a child Who it’s forChildren under 18 who are not automatically British, for example born in the UK before a parent settled, or born abroad. Residence neededVaries by route; discretionary applications usually expect at least 2 years in the UK. Tests and waitNo Life in the UK or English test; good character needed from age 10. Key points
  • Fee £1,000; £130 ceremony fee if the child turns 18 during it
  • Some routes are an entitlement; others are at the Home Secretary’s discretion
  • Both parents usually need to consent to the application
Full guide: Registration of a child

* In special circumstances the Home Office can treat some extra absences as allowed.

Summary of the Immigration Rules and GOV.UK guidance as at 9 October 2026. Rules change often; this is general information, not advice on your case.

Eligibility

UK British Citizenship Eligibility Requirements

Meeting the eligibility criteria is essential for a successful British Citizenship UK application. The requirements vary based on your personal situation, but the main conditions are outlined below.

Residency & Immigration Status

You must have lived legally in the UK for a minimum period of 5 years. Additionally, you are required to hold Indefinite Leave to Remain (ILR) or another permanent settled status for at least 12 months immediately before submitting your naturalisation application.

Key Exemptions & Rules:

  • Standard track requires 5 years of continuous residency.
  • Must not have breached any UK immigration laws during this period.
  • Strict limits apply to the number of days spent outside the UK.

Spouse Rule: If you are legally married to, or in a civil partnership with a British citizen, the residency requirement is typically reduced to 3 years with no 12-month waiting time after ILR.

Each requirement must be met, and shown with the evidence the Home Office asks for.

Good to know

British Citizenship Questions, Answered

Who can apply for British Citizenship UK?

You can apply if you have lived in the UK for at least 5 years, held Indefinite Leave to Remain (ILR) or settled status for at least 12 months (or immediately if married to a British citizen), and meet the good character, English language, and Life in the UK Test requirements.

What are the main eligibility requirements for British citizenship?

You must have lawful residence for the qualifying period, have ILR or settled status, show good character, pass the Life in the UK Test and an approved English language test (unless exempt), and intend to continue living in the UK.

How do I apply for British citizenship by naturalisation?

You apply online or by post via the official GOV.UK website. The application requires supporting documents, proof of residency, evidence of language knowledge, Life in the UK Test result, and payment of the Home Office fee.

Can my children be included in my citizenship application?

Children are not automatically included in an adult’s application. You typically need to submit separate registration applications for children, either at the same time or after your own grant of citizenship.

Do I need to pass the Life in the UK Test and an English test?

Yes. Adults applying for citizenship must pass the Life in the UK Test and show knowledge of English, Welsh, or Scottish Gaelic unless they are exempt due to age (under 18, or 65 or over) or a long-term physical or mental condition.

What is the difference between naturalisation and registration?

Naturalisation is the route most adults use to become British citizens after meeting specific residency and eligibility criteria. Registration usually applies to children or certain adults in special circumstances, such as those with a claim through British descent.

What documents are required for a British citizenship application?

You will need your current passport or national ID, proof of ILR or settled status, your Life in the UK Test certificate, English language test certificate, and proof of residency (such as utility bills or bank statements) for the required period.

How long does the British citizenship application process take?

Most applications are processed within 6 months, but times may vary depending on individual circumstances and Home Office workload.

Can I hold dual citizenship with the UK?

Yes. The UK permits dual citizenship, so you may keep your original nationality if your country of origin allows dual citizenship.

What if my application is refused?

If your application is refused, you cannot appeal, but you may request a reconsideration from the Home Office or submit a new application after addressing the refusal reasons.

How much does a British citizenship application cost?

The application fee is set by the Home Office and is subject to change. You should check the official GOV.UK website for the current fee for a naturalisation application.

Talk to us about British citizenship

Book a consultation and we’ll check whether you can apply now, and what to have ready. We’re regulated by the Immigration Advice Authority (F202638454).