British Citizenship by Naturalisation

You can apply for British Citizenship by Naturalisation provided you meet specific requirements relating to your immigration status, residence in the UK, English language ability, knowledge of life in the UK, and good character. Also, the requirements vary depending on whether you are married to a British citizen.

Eligibility for Naturalisation

Section 6(1) of the British Nationality Act 1981 provides the statutory requirements for Naturalisation. To be eligible, you must demonstrate that:

• You are aged 18 or over and of sound mind
• You have held Indefinite Leave to Remain or Settled Status for 12 months
• You have lived in the UK lawfully for at least 5 years
• You have not spent more than 450 days outside the UK in the 5-year period, and no more than 90 days in the last 12 months
• You were physically present in the UK exactly 5 years before applying
• You have not breached UK immigration laws during the 5 year period
• You have passed the Life in the UK Test
• You meet the English language requirement
• You are considered to be of good character
• You intend to make the UK your permanent home for the forseeable future

Naturalisation as a Spouse or Civil Partner of a British Citizen

The requirements for naturalisation if you are married to a British citizen can be found in section 6(2) of BNA 1981. You must demonstrate that:

• You are aged 18 or over and of sound mind
• You hold Indefinite Leave to Remain or Settled Status on the date of application
• You are married to or in a civil partnership with a British citizen on the date of application
• You have lived in the UK lawfully for at least 3 years
• You have not spent more than 270 days outside the UK in the 3-year period, and no more than 90 days in the last 12 months
• You were physically present in the UK exactly 3 years before applying
• You have not breached UK immigration laws in the 3-year period before applying
• You have passed the Life in the UK Test
• You meet the English language requirement
• You are considered to be of good character

If you are unsure whether you meet the requirements for British citizenship by naturalisation, our immigration team can assess your eligibility and advise on the appropriate next steps. Call our team on 0208 757 5751 or use our Contact Form to discuss your application and receive clear, professional guidance.

Residence and Absence from the UK

In addition to meeting the general residence requirement (3 or 5 years), you must also satisfy further criteria regarding physical presence and absences from the UK.

You must have been physically present in the UK on the exact date three or five years before the Home Office receives your application, depending on the route you are applying under. For instance, if your application is received on 5 January 2026, you must have been in the UK on 6 January 2021 (5-year route) or 6 January 2023 (3-year route). If you were abroad on that exact date, the application is likely to be refused, regardless of whether you meet all other requirements.

You must declare all absences from the UK during the relevant residence period. Only full calendar days spent outside the UK count towards this total. The day of departure and the day of return are not included. For example, if you leave the UK on 22 September and return on 23 September, no absence is counted. If you return on 24 September, this counts as one full day.

Read further at British Citizenship Residence Requirements.

Do I Need to Live in the UK for the Forseeable Future?

If you are applying under the 5-year route to naturalisation, you must demonstrate and confirm that at the time of applying, if granted British citizenship, you intend to make the United Kingdom your principal home.

Read further at British Citizenship Future Intention Requirement.

English Language Requirement

To be eligible for British citizenship by naturalisation, you must demonstrate sufficient knowledge of English, Welsh, or Scottish Gaelic. You can demonstrate your English language proficiency in one of the following ways:

Secure English Language Test (SELT) at Level B1 or Higher

You can meet the requirement by passing a Home Office approved English language test in speaking and listening at CEFR level B1 or above. The cost of an approved English language test is £150. The test must:

• Be on the Secure English Language Test (SELT) list
• Be taken at a Home Office–approved test centre
• Have been valid within the last 2 years, unless previously accepted for your ILR.

UK Degree 

You are exempt from the SELT requirement if you hold a UK Bachelor’s, Master’s or PhD degree taught in English. 

Professional diplomas (e.g. accountancy or hospitality courses) that do not require a degree for entry are not accepted.

Overseas Degree Taught in English

If you earned a degree from a university outside the UK, you must provide:

• An Academic Qualification Level Statement (AQUALS) from Ecctis (formerly UK NARIC), confirming the qualification is equivalent to a UK degree
• If the degree was not from a majority English-speaking country, you also need an English Language Proficiency Statement (ELPS) from Ecctis showing the degree was taught in English.

Nationality of a Majority English-Speaking Country

If you are a citizen of a majority English-speaking country, you are considered to meet the language requirement automatically. Nationals of the following countries are accepted as majority English speakers for naturalisation purposes:

• Antigua and Barbuda
• Australia
• The Bahamas
• Barbados
• Belize
• The British overseas territories
• Canada
• Dominica
• Grenada
• Guyana
• Ireland (for citizenship only)
• Jamaica
• Malta
• New Zealand
• St Kitts and Nevis
• St Lucia
• St Vincent and the Grenadines
• Trinidad and Tobago
• The United States of America

The Life in the UK Test

To meet the Life in the UK requirement for naturalisation, you must pass the official Life in the UK Test. This is a multiple-choice test based and is designed to assess your knowledge of British history, values, traditions, and everyday life.

Exemptions may apply if you are aged 65 or over, or if you have a long-term physical or mental condition that permanently prevents you from meeting the requirements. 

If you were granted Indefinite Leave to Remain under the EU Settlement Scheme (EUSS), you may not have been required to meet these requirements at the time of settlement. However, for naturalisation, you must meet both the Life in the UK and language requirements. This means providing evidence of a valid English language qualification or exemption, and a pass certificate for the Life in the UK test.

The cost of the test is £50 and for the official booking and test centre information, visit Book the Life in the UK Test. 

Good Character Requirement

All applicants for British citizenship by naturalisation must satisfy the good character requirement. This is assessed by reviewing your conduct, behaviour, and compliance with UK law over time.

An applicant will not normally be considered to be of good character if there is evidence of criminality, breach of law, deception or dishonesty. 

Applicants must disclose all criminal convictions, including those considered spent, as well as any cautions, civil penalties, or ongoing investigations. Attempting to withhold information or providing inaccurate details is likely to result in refusal, regardless of the underlying issue.

Referee Requirements

All British citizenship applications must be endorsed by two referees who meet specific criteria. One referee must be a British citizen and either a professional person or over the age of 25. The other referee can be of any nationality, but must be a professional, such as a civil servant, minister of religion, teacher, or member of a professional body (e.g. solicitor or accountant). 

Both referees must:

• Have known you personally for at least 3 years
• Not be related to you or to each other
• Not be employed by the Home Office
• Not have unspent criminal convictions, particularly for imprisonable offences in the last 10 years

Read more on the full list of acceptable professions at British Citizenship Referee Requirements.

How to Apply for British Citizenship through Naturalisation

1. Confirm that you meet the statutory requirements under the British Nationality Act 1981
2. Use Application Form AN to submit your naturalisation application through the official gov.uk online portal. The form can be saved and completed in stages
3. You must provide details of two acceptable referees who have known you personally for at least three years
4. Pay the application fee of £1,735. The fee is non-refundable once the application is accepted as valid
5. Upload your supporting documents to UK Visa and Citizenship Application Services (UKVCAS)
6. Book and attend your biometric  appointment to enrol fingerprints and a photograph at your nearest UKVCAS service point
7. If the Home Office requests further information, respond promptly and fully to avoid delay
8. If approved, you will be invited to attend a citizenship ceremony, where you will take the Oath or Affirmation and receive your Certificate of Naturalisation. You will then be able to apply for a UK passport.

Documents Required for Naturalisation

You must provide clear evidence that demonstrates your eligibility in support of your application for British Citizenship by Naturalisation. These may include:

• Current and previous passports covering your qualifying residence period

• Proof of Indefinite Leave to Remain or Settled Status, for example, an eVisa share code

• Two referees, including names, contact details, professions and a brief explanation of how they know you.

• Two passport photographs for the Referee declarations

• Evidence of knowledge of English, such as a valid SELT certificate or a degree taught in English

• Life in the UK Test pass notification or reference

• Evidence of residence, this may include as employer letters, payslips, bank statements, or other official documentation.

The documents required will vary depending on your individual circumstances. It is advisable to seek professional advice to ensure you submit the correct and complete evidence.

Our experienced immigration team can review your eligibility, confirm the correct supporting documents, and prepare your naturalisation application to meet Home Office requirements. For tailored advice on becoming a British citizen, contact Whytecroft Ford on 0208 757 5751 or complete our Contact Form.

British Citizenship by Naturalisation Cost

The application fee is £1,735 per adult applicant, which includes the citizenship ceremony.

The fee is non-refundable if the application is refused.

Read more on the total costs of applying at British Citizenship Fees 2026: Total Costs Explained.

Applying for Children

Children under or over the age of 18 can apply along with their parents who are applying to be naturalised. However, each child must also satisfy seperate requirements and pay an additional fee.

Application Processing Time

The Home Office aims to process naturalisation applications within six months. In practice, most well-prepared applications are decided in three to six months.

Read more on the complete timeline at British Citizenship (Naturalisation) 2026 Timeline Explained.

If the Application is Approved

If your application is successful, and you are aged 18 or over, you will be invited to attend a citizenship ceremony. 

You must arrange and attend your ceremony within 90 days of receiving your invitation. The date by which you must attend your ceremony will be given in your invitation. You will receive an invitation from the Home Office, and this will confirm the local authority you should contact to arrange your ceremony.

If the Application is Refused

There is no right of appeal against a refusal of British citizenship by naturalisation. However, if you believe the decision was based on an error of law or that relevant evidence was not properly considered, you may request a reconsideration using Form NR, which requires payment of a separate fee.

The Home Office will review the original decision and may either uphold or overturn it.

Read more on what to do if an application is refused at British Citizenship Refused – What’s Next?

Does the UK Allow Dual Citizenship?

Dual nationality (or dual citizenship) means holding British citizenship alongside another nationality. The UK recognises and allows dual nationality, so British citizens may also hold passports from other countries.

Countries that allow dual citizenship include Australia, France, Italy, Pakistan, South Africa, USA. Countries that do not allow dual nationality include India, China, Japan and Singapore.

Travelling After Naturalisation

Once you have naturalised as a British citizen, you can no longer use your BRP, eVisa, or citizenship certificate for international travel or re-entry into the UK. British citizens are not eligible for Electronic Travel Authorisation (ETA) or UK visas.

To travel, you must hold either:

• a British passport, or
• a certificate of entitlement (COE) to the right of abode in a valid foreign passport.

Without one of these, you may face delays or be denied boarding when returning to the UK. You should ensure you obtain the appropriate document before planning any international travel following naturalisation.

Upcoming Changes to Naturalisation Rules

The UK government’s 2025 Immigration White Paper proposes significant reforms to the settlement and citizenship process. Key proposals include:

• Extending the qualifying residence period for Indefinite Leave to Remain (ILR) from 5 years to 10 years for most applicants.
• Introducing a points-based assessment of an applicant’s contributions to the UK, including tax compliance, employment history, and community involvement.

If implemented, these changes may delay eligibility for naturalisation and make the evidential threshold more demanding. Applicants who already qualify under current rules may wish to consider applying before any changes take effect.

How We Can Support You

Many individuals approach the naturalisation process feeling uncertain,  unsure about travel history, previous immigration issues, or how to meet the full requirements. With the right support and preparation, however, these concerns can often be resolved.

At Whytecroft Ford, we assist clients through each stage of the process. From confirming eligibility and reviewing absences, to preparing supporting documents and addressing any complexities, we provide clear, practical guidance based on Home Office rules and experience.

Our aim is to ensure your application is accurate, well-structured, and ready for submission, reducing the risk of delays or refusal and giving you confidence at every step.

Contact our friendly professional team on 0208 757 5751 or use our Contact Form.