British Citizenship Application Guide 2026

Applying for British Citizenship in the UK

British citizenship allows you to live in the UK permanently without immigration restrictions, vote in UK elections, and hold a British passport. There are two main legal routes to becoming a British citizen, depending on your background and immigration history.

• A) Registering as a British citizen (claiming or registering an existing entitlement)
• B) Naturalisation (applying after a period of lawful residence in the UK)

A) Registering as a British Citizen (Claiming Citizenship)

Registration applies where a person already has, or can establish, an entitlement to British nationality under the British Nationality Act 1981. You do not usually “apply” for citizenship in these cases. Instead, it can be claimed or registered for those who meet the requirements, which normally include having an ancestral or birth connection to the United Kingdom. You can normally register or claim if:

• You are an automatic British citizen if you were born or adopted in the UK to a British parent, making you eligible to apply directly for a British passport
• You (or your child) are under 18 and were born in the UK on or after 1 January 1983, and since birth, one or both parents became settled in the UK
• You were born in the UK on or after 1 January 1983 and lived in the UK continuously until you were 10 or older.
• You may qualify to register if you were born or adopted outside the UK to at least one British parent. This depends on your date of birth, whether the British parent is permitted to pass on citizenship, and any Crown or overseas service connections. This is not always automatic. If you cannot register, you can apply for British citizenship by descent or by adoption.

B) Application for British Citizenship by Naturalisation

Those who are not eligible to apply by birth, adoption or descent, or rarer pathways, may apply for naturalisation if they are aged 18 or over. Citizenship by naturalisation is the citizenship pathway for all non-British or non-Irish nationals who come to the UK without ancestral, birth, adoption or descent eligibility.

Who Applies by Naturalisation?

Naturalisation typically requires you to spend a period of “continuous residence” in the UK. Once you have spent the required time living in the UK on a valid visa pathway and have either Indefinite Leave to Remain (ILR) or EU Settled Status, you can apply for British citizenship (usually 12 months after ILR approval). Those who come to the UK on a long-term visa (without a birth or ancestral claim) must apply for citizenship by naturalisation. It applies to the following routes and others:

• Long-residence applicants
• Skilled Workers
• Spouse visa holders (Partners of British citizens can apply for British citizenship immediately after ILR approval)
• Family visa holders
• EU nationals with settled status
• Refugees and humanitarian protection holders
• Global Talent and Innovator Founder visa holders

Other Routes to British Citizenship

• Citizenship for “stateless” individuals. If you are “stateless” and are thus not recognized as the citizen of any country, you may be eligible to be a British citizen. Both your eligibility and the application process you need to follow depends on the country where you were born.
• Nationality for those who renounced it. If you gave up your British Citizenship, you may eventually be allowed to resume your status.

British Citizenship Timelines (Current Law)

Future Timelines Under Earned Settlement Proposals

Earned settlement is a law change that the current UK government have proposed. It is not yet law, and is in the consultation stage. Yet, the government have promised it is incoming in 2026. It would increase the timeline to UK settled status (Indefinite Leave to Remain) for most people, except in key categories, thereby increasing the time to British citizenship, as ILR is a prerequisite for naturalisation.

How Does the New Government “Earned Settlement” Proposal Affect Your Citizenship Timeline?

Standard ILR route could increase from 5 years to 10 years. Earlier settlement possible through:

• Higher earnings
• Long-term integration
• Volunteering and compliance history

Exemptions

• No change expected to the British National (Overseas) (BN(O)) visa and Spouse visa, and to Global Talent & Innovator Founder visa routes

Likely impacts by visa type:

These changes are not law yet, but applicants should plan ahead, and seek advice if unsure of their timeline to ILR and British citizenship.

What are the British Citizenship by Naturalisation Requirements?

Based on the British Nationality Act, those who wish to apply for Naturalisation must meet the following eligibility requirements:

• Be over the age of 18.
• Has held Indefinite Leave to Remain (ILR) for at least 12 months (or immediately if married to a British citizen)
• Meet the B1 CEFR level English language requirements (unless exempt). This is expected to increase to B2 in April 2026
• Pass the Life in the UK Test, to show that you are aware of the basics of the British customs, traditions and culture.
• Not have been in breach of any UK immigration rules.
• Demonstrate that they meet the Good Character requirement.

Physical Presence (Absence) Requirement

You must have been physically present in the UK for the preceeding years before your application. How long depends on who is applying:

• Standard applicants must spend at least 5 years of continuous residence in the UK, with no longer than 450 days outside the UK.
• Applicants who are married to or in a civil partnership with a British citizen must instead spend at least 3 years of continuous residence in the UK, with no more than 270 days spent outside the country.

And:

• All applicants must spend no more than 90 days outside the UK in the final 12 months before naturalisation application

The “Good Character” Requirement

To qualify for British citizenship, you must demonstrate your “good character”. You must not have any serious or recent criminal record, nor have you broken any UK immigration laws during your time in the UK. The Home Office will also review any criminal offence committed overseas and UK immigration-related issues.

Referee Requirement

Your application needs to be certified by two referees of your choice. Their role is to confirm that the information you have provided on your form is correct. Without your referees’ signatures, your request will be invalid and rejected.

Who can be a Referee for my British Citizenship Application?

Your British Citizenship referees must both have known you for at least three years, and they cannot be related to you or each other. In addition, they must not have had any criminal convictions within the last ten years prior to your application.

One of your referees must be a person of professional standing, such as a doctor, a minister of religion, or a member of a professional body. However, he or she cannot be employed by the UKVI nor be a solicitor or agent representing you on this case.

It is not essential for this person to be a British citizen. Nevertheless, your other referee must be a UK national and hold a British passport. This person must either be at least 25 years old or an accredited professional.

Life in the UK Test Requirement

Also known as the British Citizenship Test, this exam consists of 24 questions about British culture, histories and customs, which all British citizens must know. All the questions are based mainly on the information included in the Life in the UK Handbook provided by the Home Office. The minimum mark required to pass this test is 75%, and the exam is mandatory for those who wish to settle in the UK.

If you have already lived in the UK and obtained a pass certificate as a part of your Indefinite Leave to Remain eligibility requirements, you will be exempt from these British nationality requirements.

You can book your test online. This must be done at least three days in advance, and you can only choose one of the five centres closest to where you live. On the day of your exam, you must bring with you the same ID that you used to book the test, as well as any proof of your address. If you fail to provide the required documentation, you will not be able to sit the test and will not receive a refund.

If you pass the test, you will receive a notification letter that you must send to UKVI along with your permanent residence form. If you fail the test, you can retake it as many times as needed until you pass.

English Language Requirements for UK Citizenship

Before you can be a British citizen, you need to prove your knowledge of the English language.

You must have a recognised English test qualification at least at B1 level (expected to be B2 from spring 2026) from an approved test centre. The only credentials accepted by the UKVI are the ones certified by ESOL (English for Speakers of Other Languages). Qualifications such as GCSEs and NVQs (National Vocational Qualifications) are not valid for this requirement.

Most test qualifications only last for 2 years, although the Home Office will accept an expired certificate if it was accepted for another UK immigration application or when you settled gained ILR, permanent residence status or EU Settled Status.

English Language Requirement Exemptions

You do not need to sit an English test if you:

• Are aged 65 or over
• Suffer from a long-term physical or mental condition
• Have a degree that was taught or researched in English

If you studied abroad, you would need to provide an Academic Qualification Level Statement (AQUALS) to certify that your degree is equivalent to a UK qualification and that it was taught in English.

Applying for British Citizenship by Naturalisation

Before you apply for naturalisation, you must ensure that you meet additional requirements. Your total number of absences from the UK must not exceed 6 months within 12 months, especially during the last year of your qualifying period, when you cannot spend more than 90 days outside the UK. You should not leave the UK while your application is pending. It is also essential to satisfy the English language requirements unless you are exempt.

To apply for British citizenship takes from three to six months. If your application is approved, you will receive an invitation to attend a Citizenship ceremony to obtain your Certificate of Naturalisation.

British Citizenship Application Process

To send your request for British Citizenship by Naturalisation, you need to:

• Complete the online or offline application form provided by the UKVI, and submit it along with your supporting documentation. The form you need to submit is Form AN, Application for Naturalization as a British citizen. Each section of the form requires you to provide detailed information about your case to prove your eligibility.
• Compile evidence and documents showing you are of “good character”, have not broken the law (including immigration law) and are fully eligible to be naturalised as a British citizen. This could include: proof of residency, details of your employment status and any dependents applying with you.
• If you are registering as the spouse of a British national, you must also produce evidence of your relationship.
• You must include details of your two referees, who will need to sign your form to confirm that the information you provided on your form is correct and true.
• Submit your biometric details (photograph and fingerprint scans) at your nearest UKVCAS centre.

• The Home Office may contact you to let you know if you can provide your information at a local post office. If you wish, you can get in touch with the Home Office directly.
• You can submit your forms and documents either from abroad or from within the UK. You must pay the fees.

British Citizenship by Naturalisation Fees

Note, the fee for Naturalisation typically includes the Citizenship ceremony fee; therefore, the full fee is £1,735.

What is the British Citizenship Application Form?

Form AN (Application for Naturalisation) is the form used for all British Citizenship by Naturalisation applications. Some processes may require supporting information and other forms to be filled in, but the starting point for an application is Form AN.

The form is a long, complex document that requires detailed evidence at each stage to prove your eligibility under the strict, mandatory, and discretionary immigration laws. You will need to prove your language proficiency, completion of Life in the UK tests, a good character assessment, and provide other route-specific evidence.

What Documents Do I Need to Apply for British Citizenship by Naturalisation?

When submitting your request to become a British citizen, it is essential to prepare a comprehensive portfolio of documents to demonstrate that you meet all the residency requirements. This will enable the Home Office to evaluate your case. The following documents must be sent to the Home Office as part of a British citizenship application:

Core Documents

• Evidence of your identity and permanent residence status, such as your passport, birth certificate or any valid travel document.
• Your Biometric Residence Permit (BRP) or e-Visa details, residence card, or any proof that you hold Indefinite Leave to Remain or EU Settled Status.
• Evidence of your previous immigration status and your right to remain in the UK, including any visa that you held before you settled in the UK.
• Proof showing that you are free from UK immigration time restrictions and you have the right to remain in the UK.

Proving you have met the requirements of your current visa

• Proof that you have exercised treaty right in the last 3 or 5 years, depending on your immigration status. To this end, you can provide letters confirming your current employment, bank statements, or letters from your educational institution.

Proving your “Good Character”

• Proof you meet the good character requirement, and you have never been in breach of any UK immigration laws.

Documents for Absence Requirements

• Travel details of any period of absence that you have spent outside the UK. To become a British citizen, you need to show that you have not been absent from the UK for more than 450 days during the five year residence period
• Evidence of lawful residential presence in the UK during the qualifying period. As a resident of the UK, you must have always respected all the immigration laws.

Proving Language Proficiency & Life in the UK Test

• Proof of English language and knowledge of life in the UK. You will receive a valid pass certificate after completing both the Life in the UK Test and the ESOL language exam. If you have already completed the Life in the UK Test when you obtained Indefinite Leave to Remain, you do not need to resit the exam.

You may be asked to provide additional documents to support your application depending on your individual circumstances.

How Long does the British Citizenship Application Process Take?

The Home Office will start processing your case only once you have paid your appropriate fee with most cases decided by the UKVI within six months. Although it is not possible to apply for the Premium Same Day Service to speed up this type of application, you may receive your answer from the Home Office earlier than the expected waiting time.

While complex cases are likely to take more than the average six-month period, if you provide comprehensive and adequate documentation about your circumstances, the Home Office may be able to review your case quickly. If you fail to submit all the required documents and evidence, your request will most likely be delayed or rejected. It is important to note that fees are not refundable even if an application is refused.

Once your application is approved, you must wait until you are invited to a Citizenship Ceremony to receive your Naturalisation certificate and to apply for a British passport.

What is the British Citizenship Ceremony?

Under the British Nationality Act, all applicants over the age of 18 who are accepted as naturalised British citizens in the UK are required to take part in a Citizenship ceremony. The aim is to make each new British citizen feel welcomed into the British community.

Ceremonies must be booked within 3 months of the date you received an invitation from the Home Office. Although you can bring one guest to your service, these functions are not open to the general public and are usually attended by the Mayor or Deputy Mayor of your local council.

When attending your ceremony, you must bring both your Home Office letter of invitation and your written confirmation from the Register Office. You will be asked to take an Oath of Allegiance and pledge of loyalty to the UK. You will then receive your British nationality certificate and an information pack to learn more about your new rights and responsibilities as a British citizen.

If you live outside the UK, you can ask the embassy or consulate in your country to hold your ceremony there. Otherwise, if you plan to return to the UK within 3 months of getting your invitation, you may postpone the ceremony.

What Are the Differences Between British Citizenship and ILR?

Both ILR (including permanent residence and EU Settled status) and British nationality give you the right to live, work and study in the UK free from immigration controls. However, these are two distinct statuses.

Indefinite Leave to Remain (ILR)

You can apply for ILR after five years of continuous residence in the UK. Once you get this status, you will officially be a British settled person, and you will be able to live permanently in the UK, access public funds, bring your family, and leave and re-enter the country without needing to apply for a visa.

Holding ILR is a mandatory step before you can naturalise in the UK as a citizen. However, it is essential to note that you can lose your ILR status if you live outside the UK for more than two years.

British Citizenship

British nationality will grant you full rights and responsibilities, including the ability to vote in parliamentary and local elections and to obtain a British passport. Most importantly, you will be able to leave the UK for unlimited periods of time without worrying about losing your status.

I was Granted Indefinite Leave to Remain. When can I Apply for British Citizenship?

As a general rule, you can become a British national once you have ILR – Indefinite Leave to Remain in the UK, Indefinite Leave to Enter the UK, and for EU and EEA citizens, held EU settled status for a specific amount of time. If you are married to a British citizen, you can apply for Naturalisation immediately after you are granted Indefinite Leave to Remain in the UK.

During the 12-month qualifying period before applying, you cannot spend more than 90 days outside the UK. You may be asked to provide details about any absence that you had made before submitted your request. If you hold Indefinite Leave to Remain, but you are away from the UK for more than two years, you will lose your status, and you will not qualify to British nationality until you have spent further eligible time in the UK.

If you are an EU citizen holding settled status, you will lose your right to settle in the UK after spending more than five years abroad. If you wish to reobtain your status, you must submit a new application.

British Citizenship Application Advice

Applying for British nationality may be stressful and time-consuming. At IAS, we are committed to providing professional assistance to all our clients. Your case will be processed by an experienced lawyer, who will assess your situation and advise you on how to proceed. Hire one of our specialists to ensure that each part of your forms is completed by our experts.

British Citizenship Application Assistance

At IAS, our British citizenship solicitors can help you through each step of your British nationality case. After assessing your eligibility, your dedicated lawyer will complete your application form to the best standard. This includes performing a full document check to ensure that your portfolio of evidence is adequate. We can also prepare a Letter of Representation to support your case.

Call us on +44 (0)333 414 9244 or book an appointment at one of our office, located in London, Birmingham, Manchester and other areas of the UK, to get started on your application.

What are the Requirements for British Citizenship by Birth?

Not every child born in this country automatically receives British Citizenship by birth. In fact, to be eligible, at least one parent must be a British citizen or hold settled status. If they don’t qualify for a British passport application, you may need to apply for citizenship by descent.

Children born in the UK to non-British citizens parents will automatically be recognised as dependents, and thus subject to the same visa rules as their parents. If this is your situation, you may be able to register your child for British citizenship when you become settled in the UK or gain citizenship.

What are the Mandatory British Citizenship by Descent Requirements?

British Citizenship by descent is acquired by those born outside the UK to at least one parent who was or is a British citizen. British nationality cannot be automatically passed on to any child born abroad, and you must apply for Citizenship by Descent.

Double Descent

If you were born after 1^st January 1983, you may be able to register for UK nationality by descent if you have a British born grandfather who was in Crown service, or if one of your parents was born in a former British colony. Applications for double-descent are challenging and are especially difficult for commonwealth ancestry.

How Can I Acquire British Citizenship by Marriage?

If you are married to a UK national, you can submit your application for naturalisation after three years of lawful and continuous residence in the UK as a settled person.

Before you submit your Form AN, Application for Naturalisation as a British Citizen, you must ensure you meet the following requirements:

• Are married to a British citizen.
• Have held ILR, have an EEA permanent residence card or EU Settled Status for at least a three-year period prior to your application.
• Be at least 18 years old.
• Qualify as a good character, and do not hold any serious criminal record either abroad or in the UK.
• Demonstrate your knowledge of written and spoken English. You must either sit an ESOL exam or show proof that you are a national of an English-speaking country.
• Pass the Life in the UK Test.
• Provide proof of at least three years of continued residence in the UK.

Can a Refugee Acquire British Citizenship?

According to the 2009 Borders, Citizenship and Immigration Act, the path to nationality and permanent residence in the UK for refugees comprises three different stages:

• Temporary residence status (5 years), obtained as a result of their asylum status.
• Probationary Citizenship (1 to 3 years), which can be gained by passing an Active Review. This means that applicants must have continued need for protection, pass the Life in the UK Test and hold no criminal record.
• Full Citizenship or Permanent Residence status.

How Can I Track my British Citizenship Application Status?

On average, British nationality applications are processed within three to six months. However, this timeframe may vary depending on the complexity of your case and the volume of requests that the Home Office has to handle.

Since you do not need to send your original passport along with your Naturalisation form, you can travel abroad freely while your case is processed.

You cannot track your application status online. Nevertheless, you can contact UKVI by email or phone to check the status of your request at any time.

Can you Renounce British Citizenship or Nationality?

You can apply to give up and renounce your British citizenship or status. For instance, you might wish to do this to become a citizen of another country that does not allow dual nationality. On the other hand, it must be noted that, if you wish to register as a national of a country that allows dual citizenship, you do not need to renounce status in the UK.

Once your request is accepted, you will receive a “declaration of renunciation”. This can be used to demonstrate that you are no longer British. However, this will only affect you. Any other member of your family will retain his or her status as a UK national.

To renounce your status as a British national, you must be at least 18 years old. Besides, you need to meet the “sound mind” requirement, meaning that you must legally be considered able to make your own decisions.

Resumption of British Citizenship

If you have given up your status, but you changed your mind, you can apply for resumption. However, as the British Nationality Act 1981 states, this may be possible only if “renunciation was necessary to enable the applicant to retain or acquire some other nationality”. When applying to resume your status, you must prove that you still have strong and reasonable connections with the UK. Although you may have been a British national in the past, the Home Office will need to review your good character before allowing you to reclaim your status.

Is Dual Citizenship Allowed in the UK?

Since there is no requirement to renounce previous nationalities, dual citizenship is always allowed in the UK. Holding dual nationality means that you can be British national and also a citizen of another country of your choice. In addition, UK law also allows multiple citizenships. Therefore, you can apply for UK Naturalisation even if you already hold more than one more nationality.

You do not need to register for dual citizenship. If you are already a British national, you can apply for foreign citizenship in any country that allows dual nationality.

On the other hand, each country has its own rules relating to dual nationality. For this reason, it is essential to check with your country’s consulate or embassy if you can maintain your status in the UK.

When you send your request, you should consider several factors. For example, as a dual national, you cannot get diplomatic help from the British government when you are in any other country where you hold your other permanent residence.

If you are a British citizen and want to attain citizenship in a country that does not allow dual nationality, you will need to give up your British citizenship. In other circumstances, becoming a British citizen may automatically result in a loss of any previous nationality. Before you submit your request, it is advisable to also check if you need to notify your country of original citizenship of your intention to naturalise in the UK.

Can you Appeal a British Citizenship Decision?

Your application for British citizenship may be refused. You may have the right to appeal the decision. In your refusal letter, you will be given more information about what you can do next.

The following steps outline why your citizenship application might be refused:

• You are ineligible to apply based on your immigration status, nationality, background, or other circumstance
• You have not met the criteria for ‘good character,’ meaning that you may have a disqualifying criminal record, history of financial issues, or other grounds of notoriety
• You do not meet the residence requirements, meaning that you did not provide enough evidence, breached immigration laws, or were absent for too long a period
• Not having the required level of English language skills or not passing the Life in the UK Test
• Failed to respond to Home Office enquiries in a timely manner
• Other disqualifying reasons

How to Appeal a British Citizenship Decision?

It is important to note that you do not have an automatic right to appeal a citizenship decision. This means that expert legal advice may be necessary to advise you on the best route based on your circumstances.

You may be able to submit a Request for Reconsideration to the Home Office to ask that they review their decision in light of an error they made based on law, policy, or procedure.

There are some situations where the Home Office are more likely to consider the request, including the following circumstances:

• The Home Office has made an error in assessing your application
• The Home Office said that you failed to respond to a request for information, but in fact you did respond within the requested time period
• Your application was refused without giving you an opportunity to reply or resolve a query
• The application was refused due to a past criminal conviction which was subsequently quashed on appeal, or otherwise withdrawn
• The Home Office failed to consider relevant documents or facts relating to your case
• Other relevant reasons

How IAS British Citizenship Solicitors Can Help With Your Application

At IAS, our British citizenship solicitors can support your application for British Citizenship in full. Whether you require advice, application support or legal assistance, our experts are here to help with:

• checking your supporting documents to ensure that they are enough to support your case;
• assessing your eligibility for British Citizenship, permanent residence and settled status;
• liaising with the Home Office until your citizenship or permanent residence status;
• preparing a Letter of Representation to be submitted alongside your forms;
• completing each part of your citizenship application form to a high standard;
• ensuring you are prepared for the ‘Life in the UK’ test; and
• ensuring you are properly prepared to pass your English language test.
  Call +44 (0)333 414 9244 or make an enquiry to get expert advice.