United Kingdom – Citizenship

Who is eligible to apply for citizenship in the UK?

Several distinct pathways lead to British citizenship — or “naturalisation” — depending on your personal situation. The principal routes are naturalisation following a qualifying period of residence, citizenship through descent or registration, and citizenship via marriage or civil partnership to a British national. Each comes with its own set of conditions, and where more than one route applies to you, you are free to choose which one to pursue.

Naturalisation after residency

Naturalisation divides into two main tracks. Section 6(1) is the standard route, requiring five years of residence and at least twelve months of holding ILR or EU Settled Status before you can submit your application. This is the most widely used pathway for adults who have relocated to the UK and established themselves here. Typically it involves securing the appropriate visa, accumulating five years of lawful residence, obtaining Indefinite Leave to Remain, and then applying for citizenship once a year has elapsed since receiving ILR.

To be eligible for naturalisation, you must be 18 or over, have held ILR for at least 12 months — or be able to apply immediately if you are married to a British citizen — and demonstrate English language ability at B1 CEFR level or above, unless you are exempt. This language threshold is expected to rise to B2 from April 2026. Countries such as Australia similarly impose language requirements for citizenship, and while the UK’s B1 standard has historically been considered accessible by international comparison, applicants should keep a close eye on any announced changes.

Citizenship by marriage or civil partnership

Section 6(2) covers spouses and civil partners of British citizens, reducing the qualifying residence period to three years and removing the need to wait twelve months after receiving ILR. Those applying on this basis can proceed directly to a citizenship application upon receiving ILR, without the additional waiting period required on the standard route. This meaningful distinction reflects the depth of connection that comes with being in a legally recognised partnership with a British national.

Citizenship by descent or registration

Registration is available to those who can demonstrate the required ancestral or birth connection to the United Kingdom. You are automatically British if you were born or adopted in the UK to a British parent, or if you were born in the UK on or after 1 January 1983 and resided there continuously until at least the age of 10.

You may be eligible to register if you were born or adopted outside the UK to at least one British parent. Whether this applies depends on your date of birth, whether that British parent is legally able to transmit citizenship, and any relevant connections to Crown or overseas service. Eligibility is not always automatic. Citizenship by descent can become particularly complicated for those born abroad in the second generation — a situation mirrored in many other countries where the right to transmit citizenship ends after one generation born outside the national territory.

Birth in the UK

Being born on UK soil does not automatically confer British citizenship. The outcome depends on when the birth occurred and what status the parents held at the time. This sets the UK apart from countries such as the United States, which applies birthright citizenship (jus soli) more broadly. In the UK, at least one parent generally needs to be British or settled at the time of the child’s birth for citizenship to arise automatically.

Special routes

From 22 July 2025, a dedicated route is available for Irish citizens: they no longer need to satisfy the knowledge of language and life (KOLL) requirements — meaning neither the English language test nor the Life in the UK Test applies — and they benefit from a reduced application fee of £723 for adults or £607 for children. All other standard conditions continue to apply, including five years of UK residence and the good character requirement.

The government has put forward a proposal known as “earned settlement,” which remains at the consultation stage and has not yet become law. The government has indicated it will be introduced in 2026. If enacted, it would extend the period required to achieve UK Settled Status for most applicants, which would in turn lengthen the overall journey to British citizenship, given that ILR is a prerequisite for naturalisation. Under these proposals, the standard route to ILR could increase from 5 years to 10 years. Those planning ahead should watch official announcements carefully and consult authoritative sources for the latest developments.

Absence limits

Throughout your qualifying period, total absences from the UK must not exceed 450 days — or 270 days on the spouse route. Furthermore, you must not have been away for more than 90 days in the twelve months immediately prior to your application date. Keeping thorough records of every journey abroad is strongly advisable from the very first day of your qualifying period.

What are the steps involved in applying for citizenship in the UK?

Applications can be submitted online, in person, or by post where the relevant route permits. All citizenship applications are handled by UK Visas and Immigration (UKVI), which sits within the Home Office. Naturalisation applications use Form AN, while various registration forms exist for other routes. Before applying, always consult the GOV.UK citizenship pages and the official fees page for the most current requirements and charges, as both are updated periodically.

1. Confirm your eligibility. Verify that you meet all the official criteria for your chosen route, covering residency, language ability, and good character. The eligibility checker on GOV.UK can help you identify which pathway best fits your circumstances.
2. Complete the required tests. You must have passed the Life in the UK Test and, unless you qualify for an exemption, an approved English language test, before lodging your application. The Life in the UK Test costs £50 and must be completed prior to applying for naturalisation. English language tests, where required, typically range from £150 to £200 depending on the test provider.
3. Assemble your supporting documents. You will need to upload your passport, ILR share code, evidence of residence and travel history, Life in the UK and English test certificates, a marriage certificate if you are applying via the three-year spouse route, and written declarations from two British referees.
4. Submit Form AN and pay the fee. The naturalisation process formally begins when you complete and submit Form AN online and pay the applicable fees. The standard naturalisation fee stands at £1,605 as of 9 April 2025, following the Home Office’s most recent fee revision. Always verify the current figure on GOV.UK before submitting. No premium or priority service is available for naturalisation applications — unlike some visa and settlement categories, there is no option to pay for faster processing.
5. Attend a biometrics appointment. Every citizenship applicant must provide biometric data — fingerprints and a photograph. There is no charge for this step. After submitting your online application, you will receive a unique reference number to use when booking your appointment.
6. Wait for the Home Office decision. The Home Office aims to determine most applications within six months. Cases that raise additional questions or require further checks may take longer. You will be contacted if the Home Office requires any clarification or supplementary information.
7. Attend your citizenship ceremony. A successful application will result in an invitation to a citizenship ceremony, where you will receive your certificate of naturalisation. You must remain lawfully present in the UK until the ceremony takes place, and you are required to book it within three months of receiving the invitation.
8. Apply for a British passport. With your certificate of naturalisation in hand, you may apply for a British passport, exercise your right to vote in all elections, stand for public office, and travel internationally without needing to seek permission to return to the UK.

No refund is given if your application is refused, which underscores how important it is to ensure you fully satisfy every requirement before you apply. Fee waivers are available in cases of genuine financial hardship — to qualify, you must demonstrate that you lack sufficient income and savings to cover both the fee and basic living costs such as food and housing.

What tests, interviews, or ceremonies are required?

The Life in the UK Test

Unless you are aged 65 or over, or have a long-term physical or mental condition that prevents you from doing so, you must demonstrate knowledge of language and life in the UK. Passing the Life in the UK Test satisfies the knowledge of life component. The test covers British history, values, customs, and traditions, and comprises 24 multiple-choice questions to be answered within 45 minutes. Its purpose is broadly comparable to the civics tests required in countries such as the United States or Australia, though the specific content and format are distinct.

English language requirement

Applicants for British citizenship are generally required to evidence their English language proficiency. This can be done either by passing an approved English language test at CEFR level B1, B2, C1, or C2, or by producing proof of an academic qualification taught or researched predominantly in English. The current minimum threshold is B1 on the CEFR scale, though this is anticipated to increase to B2 from April 2026. Check the latest guidance on GOV.UK before booking any test, as requirements may change.

Good character assessment

The Home Office scrutinises each applicant’s criminal, immigration, and financial background, including tax compliance and any civil penalties incurred. Applicants are expected to provide full and honest disclosure. You must declare all criminal convictions, both in the UK and abroad, covering custodial sentences and non-custodial outcomes such as suspended sentences. You should also declare out-of-court disposals including fines, cautions, warnings, reprimands, community sentences, civil orders, and civil penalties. Rather than a pass/fail test, this is a holistic evaluation conducted by a Home Office caseworker.

The citizenship ceremony

British citizenship does not take effect until you have completed a formal ceremony, at which you will swear or affirm an oath of allegiance and receive your certificate of naturalisation. Ceremonies are generally arranged by your local council and take place in a formal yet welcoming environment. The £130 ceremony fee, included within the total application cost, covers participation in the ceremony and the taking of the citizenship oath and pledge. Children under 18 are not obliged to attend a ceremony. The requirement to take a formal oath mirrors the citizenship ceremonies held in countries such as Australia and Canada, where pledging allegiance is a legal precondition for completing the process.

Referees

Your application must include the details of two referees who can verify your identity and who have known you for more than three years. Referees are required to satisfy specific Home Office criteria relating to their professional standing and age. Selecting referees carefully is important, as problems with referee eligibility are among the most frequent causes of delays in processing citizenship applications.

What are the benefits of British citizenship?

Acquiring British citizenship brings a substantial range of rights and freedoms that extend well beyond those available under most visa categories or even Indefinite Leave to Remain. It is a permanent legal status that removes immigration controls entirely and confirms the unconditional right of abode in the UK.

Right to vote and stand for office

British citizenship carries significant advantages, among them permanent residency, full voting rights, and access to a British passport, all of which enhance both domestic security and international freedom of movement. Citizens may participate in all UK elections — general, local, and devolved — and are entitled to stand as candidates. The right to full political engagement is one of the most significant distinctions between citizenship and settled status.

British passport and global travel

A British passport is widely regarded as one of the most powerful travel documents in the world, consistently ranking among the top eight on the Global Passport Index and granting visa-free or visa-on-arrival access to around 130 countries. For many people, obtaining a British passport dramatically simplifies international travel, enabling streamlined entry across Europe, the Americas, Asia-Pacific, and further afield.

Access to public services and protections abroad

British citizens are entitled to access public services including NHS healthcare, the state pension, free public education for children, and Home Office assistance when overseas. While those holding ILR are also able to access many of these services domestically, citizenship adds an additional layer of consular protection when residing or travelling abroad — a safeguard that can prove invaluable in emergency situations.

No immigration conditions

Unlike those on visas or even holders of ILR, British citizens are subject to no restrictions on the duration of time they may spend outside the UK. ILR can lapse after extended periods abroad, whereas citizenship is permanent and unconditional. Upon naturalising or registering as a British citizen, a person no longer requires leave to remain in the UK, and any immigration status previously held is consequently rendered void.

Employment in certain roles

British citizenship is a mandatory qualification for certain public sector positions, sensitive government roles, and posts requiring high-level security clearance. In competitive recruitment processes — particularly within government departments or security-restricted sectors — citizenship status can be a determining factor. Naturalised citizens are generally afforded the same employment rights as those who are British by birth.

Does the UK allow dual citizenship, or will you have to renounce your existing nationality?

The UK permits dual citizenship, allowing you to hold a British passport alongside another nationality simultaneously without being required to give up either. This is a notably permissive stance by international standards, and for most applicants it means that becoming British need not come at the cost of the citizenship they were born with.

The UK’s official position

The UK recognises and allows dual and multiple nationality, permitting British nationals to hold a British passport while retaining citizenship of another country. UK authorities place no obligation on British citizens to disclose dual nationality when they acquire citizenship elsewhere. There are no general exceptions based on country of origin or the manner in which citizenship was acquired — the entitlement to hold dual nationality applies on a broad basis.

Your home country’s rules may differ

While the UK takes a permissive approach, the rules of your other country of citizenship still apply and may place restrictions on dual status. Some countries automatically withdraw their citizens’ nationality when they naturalise elsewhere, while others require an explicit act of renunciation. For example, it is not possible to hold both British and Indian citizenship simultaneously because Indian nationality law does not recognise dual citizenship. Before proceeding with an application for British citizenship, it is essential to consult your home country’s official immigration or foreign affairs authority to understand the potential consequences for your existing nationality.

Travelling to the UK as a dual national

The UK continues to recognise dual nationality, and there is no requirement to surrender another citizenship upon becoming British. The change that took effect in February 2026 concerns only the method by which dual nationals demonstrate their British citizenship when entering the UK. The Home Office advises British nationals with dual citizenship to travel to the UK using a British passport, or alternatively to obtain a certificate of entitlement to the right of abode. This is a significant practical point: presenting only a foreign passport at the UK border may result in delays or complications under the Electronic Travel Authorisation (ETA) system that was introduced in 2026.

How long does it typically take to become a British citizen?

The path to British citizenship is measured in years rather than months. From the moment of first arriving in the UK to the receipt of a citizenship certificate, the minimum realistic timeframe for those following the standard naturalisation route is approximately six to seven years. Careful planning and meticulous record-keeping of all absences from day one will help prevent avoidable setbacks along the way.

For most people, eligibility for naturalisation arises one year after obtaining permanent residence, which itself ordinarily takes five years to achieve. In 2025, the total naturalisation cost for applicants is £1,735, which includes the £130 citizenship ceremony fee.

The typical Home Office processing time for British citizenship applications is between 6 and 12 months, varying according to the complexity of the case. Once a decision is made in your favour, you will be invited to attend your citizenship ceremony within up to three months. For those applying via the spouse or civil partner route, the qualifying residency period is three years rather than five, bringing the overall minimum timeline down to roughly four to five years.

While a number of applications are resolved within 2 to 4 months, others require more time, particularly where additional enquiries or clarifications are needed. The Home Office UKVI may on occasion exceed its stated six-month service standard. No fast-track or priority processing option exists for naturalisation applications, so all applicants are subject to the same queue. For the most current processing time estimates, always consult the official GOV.UK fees page and the citizenship eligibility checker.

What are the main reasons an application for citizenship in the UK might be refused?

Home Office caseworkers approach naturalisation applications with thoroughness, expecting documentary evidence for every requirement. There is no presumption in the applicant’s favour, and general statements unsupported by documentation carry little persuasive weight. Being aware of the most common grounds for refusal enables you to build a stronger application from the start.

• Failure to satisfy residency requirements. You must have been physically present in the UK for exactly five years before the date of your application — or three years if you are applying as the spouse or civil partner of a British citizen. Even a single day’s shortfall can result in a refusal.
• Excessive absences. Your total absences during the qualifying period must not exceed 450 days — or 270 days on the spouse route — and must not surpass 90 days in the twelve months immediately before your application. Absences beyond these thresholds are likely to lead to a refusal.
• Good character concerns. Caseworkers examine criminal history, deception, immigration violations, civil penalties, financial conduct, tax compliance, and any unpaid NHS charges. Guidance revised in 2025 directs refusal in specific defined scenarios, including certain forms of unlawful entry or facilitation, subject to individual assessment.
• Incomplete or inaccurate documentation. Among the most common causes of delays and refusals are errors on the application form — such as mistakes in name, place of birth, or dates — and a failure to declare prior convictions or cautions.
• Fraudulent information. Providing false information is a criminal offence. If citizenship is granted on the basis of dishonest or fraudulent declarations, it is liable to be removed through deprivation proceedings, and criminal prosecution may follow. It is a criminal offence to make a false declaration knowing it to be untrue.
• Undischarged bankruptcy. Applications are unlikely to succeed where the applicant is an undischarged bankrupt.

Is there an appeals process?

There is no statutory right of appeal against a naturalisation refusal. In limited circumstances, it may be possible to request a reconsideration, or to reapply once the identified deficiencies have been addressed. This makes submitting a well-prepared, accurate application the first time around especially important. Consulting a qualified immigration solicitor or an adviser regulated by the Office of the Immigration Services Commissioner (OISC) before lodging your application can considerably reduce the risk of refusal.

Where can you find reliable, up-to-date information about citizenship in the UK?

Citizenship rules, fees, and processing times are subject to regular revision — the only fully authoritative source of current information is the official UK government. The primary resources you should consult are listed below:

• GOV.UK — Check if you can become a British citizen: The essential starting point for eligibility checks, offering route-specific guidance and links to the relevant application forms.
• GOV.UK — Fees for citizenship applications: The official, current fee schedule for all citizenship routes, maintained and updated by the Home Office whenever charges change.
• GOV.UK — Life in the UK Test: Official guidance on how to book and prepare for the test.
• GOV.UK — Find a citizenship ceremony: A tool for locating your nearest ceremony provider once your application has been approved.
• UK Visas and Immigration (UKVI): The Home Office body responsible for processing all citizenship applications; the appropriate point of contact for queries about your individual case.

For impartial, free guidance, Citizens Advice provides accessible overviews of the citizenship process. For cases involving complexity or uncertainty, professional advice from a solicitor or an OISC-registered adviser is recommended. Exercise caution with unofficial websites that charge for forms available free from the government or that may carry outdated information.

Frequently asked questions

Do children born in the UK automatically become British citizens?

Birth in the UK does not automatically result in British citizenship. Whether a child is British depends on when they were born and the immigration status of their parents at the time. A child born in the UK on or after 1 January 1983 is automatically British if at least one parent was a British citizen or was settled — holding ILR or Settled Status — at the time of birth. Where neither parent held settled status at the time, the child may be able to apply for registration at a later stage — for instance, once a parent obtains settlement.

Can British citizenship be lost or revoked?

Yes, in certain limited circumstances. The Home Office holds the power to deprive a person of British citizenship on grounds of national security, serious organised crime, or where citizenship was obtained through fraudulent means. Anyone found to have secured citizenship by providing false or dishonest information will be at risk of having that citizenship removed through deprivation proceedings. Citizenship acquired through birth or descent is generally more difficult to deprive than citizenship obtained by naturalisation.

What happens to my citizenship application if I move abroad during the process?

Once you have submitted a citizenship application, you must maintain lawful status in the UK until citizenship is formally granted. Your permission to remain must last until your citizenship ceremony has taken place. Departing the UK before completing the ceremony could put your application at risk. If your personal circumstances change substantially after your application has been submitted, you should inform UKVI without delay.

Can I include my children in my citizenship application?

Children under the age of 18 can be registered as British citizens through a separate application. Registration is the formal mechanism for applying for British citizenship for children. Children are not required to sit the Life in the UK Test or an English language test. The registration fee for a child is £1,214 as of April 2025 — consult the GOV.UK fees page for the current figure. Children under 18 are also not obliged to attend a citizenship ceremony.

What is the “good character” requirement?

Every applicant for British citizenship must demonstrate that they are of “good character.” There is no fixed definition of this term, and each case is assessed individually at the discretion of the Home Office caseworker. The assessment takes into account factors including criminal record, immigration history, financial conduct, and the accuracy and honesty of the application itself. Good character guidance was revised and strengthened in 2025, with greater emphasis now placed on criminality, deception, immigration violations, and financial conduct.

Will my ILR lapse if I move abroad after becoming a British citizen?

Once British citizenship is conferred, ILR ceases to be relevant and is superseded by your new status. Upon naturalising or registering as a British citizen, you no longer require leave to remain in the UK, and any immigration status previously held is accordingly rendered void. As a citizen, you enjoy an unconditional right of abode in the UK, irrespective of how much time you spend abroad.

Is there a fast-track or premium route to British citizenship?

No premium or priority service exists for naturalisation applications. Unlike certain visa and settlement categories, it is not possible to pay an additional fee to have your application processed more quickly — every applicant joins the same queue and is subject to the same processing timeline. The most effective way to minimise delays is to submit a thorough, accurate application with all required documents included from the outset.

Do I need to inform my home country when I naturalise as British?

The UK does not require you to notify your home country, and UK authorities do not oblige British citizens to declare dual nationality when they acquire citizenship elsewhere. However, your home country may impose its own disclosure obligations or have rules regarding automatic loss of nationality upon naturalisation in another country — these are governed entirely by your home country’s laws. Always verify your position with your home country’s embassy or official immigration authority before submitting your British citizenship application.

Can I apply for British citizenship if I have a criminal conviction?

A criminal conviction does not automatically rule out a citizenship application, but it will be given careful consideration as part of the good character assessment. You are required to disclose all criminal convictions, both in the UK and overseas, including custodial sentences and non-custodial outcomes such as suspended sentences. The ultimate outcome will depend on the nature and recency of the offence involved. If you have any criminal history, it is advisable to seek legal advice before applying.

What is the difference between naturalisation and registration?

British citizenship can be acquired through either naturalisation or registration, and each pathway carries different eligibility criteria and residency requirements. Naturalisation is the route for adults who have lived in the UK for the requisite qualifying period, while registration is intended for those with particular UK connections or specific circumstances — such as children, individuals born in the UK who did not acquire citizenship automatically, or those with a British parent. Registration is generally a more straightforward process and does not require children to pass the Life in the UK Test or an English language test.