BRITISH CITIZENSHIP BY REGISTRATION

Registration is one of the principal ways in which a person who is not already British can become a British citizen. It is not a single route. The British Nationality Act 1981 contains a number of separate registration provisions applying to children and adults in different circumstances.

Some people have a statutory entitlement to register as a British citizen once they satisfy the relevant requirements. Other applications are decided at the discretion of the Secretary of State. The distinction is important because a person who establishes an entitlement must ordinarily be registered, whereas a discretionary applicant must persuade the Home Office to exercise its power in their favour.

Before applying to register as a British citizen, it is also important to establish whether the proposed applicant is already a British citizen. British nationality status may have been acquired automatically at birth, through adoption or following a change in a parent’s circumstances. An unnecessary or incorrectly framed registration application can result in delay, expense and uncertainty.

Eligibility for British citizenship by registration frequently depends on detailed matters such as the applicant’s date and place of birth, the citizenship and immigration status of their parents, whether their parents were married, the applicant’s residence history and the nationality laws in force at the relevant time.

Our immigration and nationality barristers assist children and adults with identifying the correct registration route, establishing entitlement, preparing discretionary applications and challenging unlawful refusal decisions.

1. What Is British Citizenship by Registration?

British citizenship by registration is the process by which a person becomes a British citizen under one of the registration provisions of the British Nationality Act 1981.

Registration is legally distinct from:

• automatic acquisition, where citizenship arises by operation of law without an application;
• naturalisation, which is the principal discretionary route for adults who have lived in the UK and satisfy residence, immigration status, good character, language and knowledge requirements; and
• a British passport application, which provides evidence of British nationality but does not itself confer citizenship.

Registration routes commonly apply to:

• children born in the UK who were not British at birth;
• children born outside the UK to British parents;
• children whose circumstances justify discretionary registration;
• adults affected by historic discrimination in British nationality law;
• Irish citizens with qualifying UK residence;
• people who already hold another form of British nationality;
• certain stateless people; and
• people seeking to resume citizenship after previously renouncing it.

Some registration provisions confer British citizenship otherwise than by descent, while others confer citizenship by descent.

A British citizen otherwise than by descent can normally transmit British citizenship automatically to a child born outside the UK. A British citizen by descent will not normally transmit citizenship automatically to a further generation born abroad, although the child may have a separate entitlement or discretionary route to registration.

The precise effect of registration therefore depends on the statutory provision under which the application is granted.

2. Who Can Register as a British Citizen?

The following table provides a broad overview of some of the main registration routes. It is not a complete statement of the law, and each route contains detailed statutory requirements.

Applicant’s circumstances	Possible registration route
Born in the UK and a parent later became British or settled	Section 13
Born in the UK on or after 13 January 2010 and a parent later joined the UK armed forces	Section 13A
Born in the UK and lived here throughout the first 10 years of life	Section 14
Born abroad to a British citizen by descent who previously lived in the UK	Section 32
Born abroad to a British citizen by descent and subsequently lived in the UK with the family	Section 35
Child without a specific statutory entitlement	Section 31 discretion
Adult affected by historical discrimination or another qualifying injustice	Sections 4C to 4I or section 4L
Irish citizen with five years’ qualifying UK residence	Section 4AA
Holder of another form of British nationality	Sections 4, 4A or associated provisions
Stateless person	Schedule 2 or another applicable provision
Person who previously renounced British citizenship	Resumption under section 13

The correct route must be identified by reference to the applicant’s individual nationality history. Similar factual circumstances may produce different outcomes depending on when and where the applicant or their parents were born.

3. Registration of Children Born in the UK

A child born in the UK is not necessarily British. For children born on or after 1 January 1983, the usual starting point is whether either parent was British or settled at the time of birth.

Where the child was not British at birth, later changes in the child’s or parents’ circumstances may create an entitlement to registration of a child born in the UK.

Child Whose Parent Later Becomes British or Settled

Under section 13 of the British Nationality Act 1981, a child may be entitled to register where:

• the child was born in the UK on or after 1 January 1983;
• the child was not automatically British at birth;
• while the child was under 18, either parent became a British citizen or became settled in the UK; and
• the application is made before the child turns 18.

“Settled” generally means being ordinarily resident in the UK without being subject to a restriction on the period for which the person may remain. Indefinite leave to remain and settled status under the EU Settlement Scheme will commonly amount to settled status, although the position at the relevant date must be examined carefully.

Evidence will normally be required of the child’s birth, the parent-child relationship and the date on which the parent became British or settled.

Child Connected With the UK Armed Forces

Section 13A applies to certain children born in the UK on or after 13 January 2010.

A child may be entitled to register where:

• the child was born in the UK on or after 13 January 2010;
• the child was not British at birth;
• while the child was under 18, either parent became a member of the UK armed forces; and
• the application is made while the child is still under 18.

The statutory meaning of membership of the armed forces and the parent’s service circumstances must be established. The route should not be confused with automatic citizenship provisions applying where a parent was already serving in the armed forces when the child was born.

Person Born in the UK Who Lived Here for the First 10 Years

Section 14 provides an important entitlement for a person who:

• was born in the UK on or after 1 January 1983;
• was not automatically British at birth;
• reached the age of 10; and
• was not absent from the UK for more than 90 days in each of the first 10 years of their life.

An application under this provision may be made by a child or an adult. There is no requirement to apply before the age of 18.

The Secretary of State has a statutory power to disregard excess absences. A person who exceeded 90 days’ absence in one or more years should therefore not assume that registration is impossible. The reasons for the absences, the extent of the excess and the applicant’s overall connection with the UK may be relevant.

An applicant aged 10 or over must satisfy the good character requirement applicable to this route.

The Home Office’s current child-registration and Form T guidance confirms the principal requirements applying to UK-born children and to applicants relying on the first 10 years of residence.

4. Registration of Children Born Outside the UK

A child born outside the UK may acquire British citizenship automatically if a parent is a British citizen otherwise than by descent. Where the British parent is a citizen by descent, however, citizenship will not usually pass automatically to a child born abroad.

Sections 32 and 35 provide routes by which certain children born abroad can register for British citizenship.

British Parent Who Previously Lived in the UK

Under section 32, a child may be entitled to register where, broadly:

• the child was born outside the UK;
• a parent was a British citizen by descent at the time of the child’s birth;
• the British parent’s own parent was a British citizen otherwise than by descent;
• the British parent lived in the UK, or in a qualifying British overseas territory, for a continuous period of three years before the child’s birth;
• the British parent was not absent for more than 270 days during that three-year period; and
• the application is made before the child turns 18.

There are qualifications and alternative provisions relating to Crown service and other designated service.

A child registered under section 32 will normally become a British citizen by descent.

Child and Parents Living in the UK for Three Years

Section 35 may provide an entitlement where:

• the child was born outside the UK;
• a parent was a British citizen by descent at the time of the child’s birth;
• the child and both parents were in the UK at the beginning of the three-year qualifying period;
• the child and parents satisfy the applicable residence and absence requirements;
• the application is made before the child turns 18; and
• the relevant parental consent requirements are met.

The general absence limit is 270 days during the three-year period.

There are important statutory qualifications where a parent has died, the parents have separated, one parent does not have parental responsibility or other particular family circumstances apply. It should not therefore be assumed that both parents must always satisfy identical residence and consent requirements.

A child registered under section 35 becomes a British citizen otherwise than by descent.

Parental Consent and Family Circumstances

Where parental consent is required, the Home Office will normally expect consent from each person with parental responsibility.

The decision-maker must nevertheless consider the child’s actual family circumstances. Issues may arise where:

• the parents are separated;
• one parent cannot be contacted;
• one parent objects;
• a parent has died;
• a court order affects parental responsibility;
• the child is in local-authority care; or
• the child has been adopted.

The existence of an objection does not automatically determine the application. The Home Office must consider the nature of the objection, parental responsibility and the child’s welfare.

The current Form MN1 guidance covers registration under sections 13, 13A, 31, 32 and 35, while the Home Office’s children guidance addresses parental arrangements and applications outside the usual criteria.

5. Discretionary Registration of a Child Under Section 31

Section 31 of the British Nationality Act 1981 gives the Secretary of State a broad discretion to register any child as a British citizen.

Unlike sections 13, 14, 32 and 35, section 31 does not create a statutory entitlement merely because specified factual requirements have been met. The Home Office must consider whether registration is appropriate in all the circumstances.

The child must be under 18 on the date of application. Once the child turns 18, section 31 is no longer available.

Factors Relevant to Section 31

The Home Office may consider matters including:

• whether the child is already British;
• the child’s age and length of residence in the UK;
• the child’s immigration status and history;
• the citizenship and immigration status of the parents;
• whether the parents are applying for or have acquired British citizenship;
• whether the child meets, or nearly meets, another registration provision;
• where the child’s future is likely to lie;
• the child’s connections with the UK and any other country;
• the views and consent of those with parental responsibility;
• the child’s best interests;
• any compelling or exceptional circumstances; and
• good character where the child is aged 10 or over.

The child’s best interests must be treated as a primary consideration. They are not, however, necessarily the only or determinative consideration.

Long residence in the UK can be highly relevant, particularly where the child has spent most of their life here, has been educated here and has limited meaningful connection with another country. Long residence does not by itself create an automatic entitlement under section 31.

Children Whose Parents Are Becoming British

The Home Office will commonly register a child where one or both parents are becoming British and the child’s future can clearly be seen to lie in the UK.

Where only one parent is becoming British, the Home Office may examine:

• the other parent’s nationality and immigration status;
• the child’s living arrangements;
• whether the child is settled in the UK;
• parental consent; and
• the family’s future intentions.

Children Who Do Not Meet the Usual Policy Criteria

Applications can be made outside the circumstances in which the Home Office would normally expect to register a child.

Such an application should address:

• the statutory discretion;
• the child’s individual circumstances;
• the child’s best interests;
• why the usual policy considerations should not prevent registration;
• any unfairness caused by the child’s nationality or immigration position; and
• the practical consequences of refusal.

A well-prepared discretionary application should not merely provide documents. It should explain why the evidence justifies a favourable exercise of discretion.

6. Registration Where Nationality Was Affected by Historical Discrimination

British nationality law historically treated people differently according to matters including sex, legitimacy and their parents’ marital status. Parliament has introduced a number of registration provisions intended to correct the resulting unfairness.

These cases can be legally complex because it may be necessary to reconstruct what the applicant’s status would have been under a hypothetical version of the law in which the discrimination did not exist.

British Citizenship Through a British Mother

Section 4C allows certain people born before 1 January 1983 to register where they would have become a Citizen of the United Kingdom and Colonies, and ultimately a British citizen, if women had historically been able to transmit citizenship on the same terms as men.

The analysis may involve:

• the mother’s place and date of birth;
• the mother’s nationality at the applicant’s birth;
• the applicant’s place and date of birth;
• the law governing transmission at the relevant time;
• historic registration requirements;
• the applicant’s right of abode; and
• amendments made to correct earlier restrictions.

The route is not confined to a simple question of whether the applicant’s mother was born in the UK. Historic nationality status, independence legislation and the right of abode may all be material.

Current Home Office guidance provides a dedicated application route for people born before 1983 to a British mother.

British Citizenship Through an Unmarried British Father

Sections 4F to 4I address circumstances in which a person would have acquired or been able to acquire British citizenship if their parents had been married.

The correct provision depends on matters including:

• the applicant’s date and place of birth;
• the father’s nationality;
• whether citizenship would have arisen automatically or through registration;
• whether the applicant is a child or adult; and
• the particular counterfactual route that would have applied.

Evidence of paternity is essential. Depending on the case, this may include a birth certificate, DNA evidence, court orders, maintenance records or other contemporary evidence.

The current Form UKF guidance addresses applications by people born to British fathers whose parents were not married.

Other Historical Legislative Unfairness: Section 4L

Section 4L allows an adult to be registered where the Secretary of State considers that the person would have been, or would have been able to become, a British citizen but for:

• historical legislative unfairness;
• an act or omission of a public authority; or
• exceptional circumstances relating to that person.

The applicant must generally be aged 18 or over and of full capacity, although the full-capacity requirement may be waived in appropriate circumstances.

“Historical legislative unfairness” concerns unfairness arising from nationality legislation that treated people differently according to matters such as sex or marital status.

An act or omission of a public authority may include an official error or failure that prevented citizenship from being acquired, although the applicant must establish the necessary causal connection.

Exceptional circumstances must relate to the applicant and must explain why citizenship was not acquired or could not be acquired. Section 4L is not a general power to register anyone whose circumstances are sympathetic.

A successful section 4L applicant becomes a British citizen otherwise than by descent. The Home Office’s current Form ARD guidance explains the statutory grounds and application process.

7. Registration as a British Citizen for Irish Citizens

Section 4AA of the British Nationality Act 1981 provides a dedicated registration route for Irish citizens who have lived in the UK for five years.

The route was introduced by the British Nationality Irish Citizens Act 2024 and became available in July 2025.

An applicant must generally show that they:

• are an Irish citizen;
• were physically present in the UK at the beginning of the five-year qualifying period;
• have not been absent from the UK for more than 450 days during that period;
• have not been absent for more than 90 days during the final 12 months;
• were not in the UK in breach of the immigration laws during the qualifying period; and
• are of good character.

The Secretary of State has discretion to waive specified residence requirements in special circumstances.

Applicants should retain valid permission to be in the UK while their application is pending where permission is required. Irish citizens generally benefit from rights under the Common Travel Area, but their individual residence and nationality position should still be documented properly.

A successful applicant becomes a British citizen otherwise than by descent.

As at 2 August 2026, the registration fee under the Irish-citizen route is lower than the general adult and child registration fees.

The official Guide B3 was updated in July 2026 and confirms the residence, lawful-presence and good-character requirements.

8. Registration for British Nationals and British Overseas Territories Citizens

British citizenship is only one form of British nationality. Other forms include:

• British Overseas Territories citizenship;
• British Overseas citizenship;
• British National Overseas status;
• British subject status; and
• British protected person status.

Holding one of these statuses does not necessarily give the person the right to live in the UK or make them a British citizen.

Residence-Based Registration for Certain British Nationals

A British Overseas Territories citizen, British National Overseas, British Overseas citizen, British subject or British protected person may be able to register following five years’ residence in the UK.

The usual requirements include:

• presence in the UK at the beginning of the five-year qualifying period;
• no more than 450 days’ absence during the five years;
• no more than 90 days’ absence during the final 12 months;
• compliance with the immigration laws during the qualifying period;
• freedom from immigration time restrictions during the final 12 months; and
• good character.

The Secretary of State has discretion in relation to certain residence requirements.

Registration Where the Applicant Has No Other Nationality

A British Overseas citizen, British subject, British protected person or British National Overseas may have an entitlement to register where they:

• have no other citizenship or nationality; and
• have not, through action or inaction, voluntarily lost another nationality after the relevant statutory date.

This route is fact-sensitive. It may be necessary to obtain evidence from foreign authorities concerning whether the applicant possesses or could have retained another nationality.

British Overseas Territories Citizens

British Overseas Territories citizens may have routes to British citizenship under section 4A or associated provisions.

In many cases, British Overseas Territories citizens became British citizens automatically on 21 May 2002 under the British Overseas Territories Act 2002. However, exclusions and specialist provisions apply, and the person’s connection with a particular territory must be examined.

Chagossian Descendants and Other Specialist Provisions

Special statutory routes exist for certain people of Chagossian descent. Eligibility depends on descent from a person born in the British Indian Ocean Territory or specified connected territories and other statutory conditions.

Other provisions address people affected by historic nationality anomalies involving British Overseas Territories citizenship.

These routes should be considered separately rather than treated as ordinary residence-based applications.

Current Home Office guidance distinguishes between residence-based registration, registration by British nationals without another nationality and British Overseas Territories citizen applications.

9. Registration of Stateless Applicants

A person is stateless where they are not considered a national by any state under the operation of its law.

British nationality legislation contains several provisions under which a stateless person may acquire British citizenship or another form of British nationality. The applicable route depends on matters including:

• when and where the person was born;
• whether they have always been stateless;
• the nationality and status of their parents;
• the length and location of their residence;
• their age at the date of application; and
• whether they can acquire another nationality.

A child born in the UK who has always been stateless may have an entitlement to register, subject to residence and other statutory requirements.

Current legislation also requires consideration, in some child cases, of whether the applicant is able to acquire another nationality. This may require evidence about the nationality law of another country and the practical steps that would be required.

Statelessness should not be assumed merely because a person does not hold a passport. Equally, the theoretical availability of another nationality may not by itself establish that the person presently possesses it.

The appropriate application depends on the applicant’s place and date of birth and that separate forms of British nationality may also be relevant.

10. Can I Resume British Citizenship After Renouncing It?

A person who previously renounced British citizenship may be able to resume it by registration.

An entitlement to resume may arise where the person renounced citizenship in order to acquire or retain another nationality.

Where there is no entitlement, the Secretary of State may retain discretion to permit resumption. The outcome may depend on:

• the reason for the original renunciation;
• whether the person acquired or retained the other nationality;
• whether they have previously renounced and resumed British citizenship;
• their current connections with the UK;
• their intentions;
• their good character; and
• any wider circumstances relevant to the exercise of discretion.

The form of British citizenship acquired following resumption may depend on the status held before renunciation. It is therefore important to consider whether the person will resume citizenship by descent or otherwise than by descent.

11. The Good Character Requirement

Applicants aged 10 or over must satisfy the good character requirement where the relevant registration provision imposes it.

The requirement does not apply to every registration route. In particular, Parliament has removed it from specified corrective routes concerned with historical discrimination, including applications under sections 4C, 4G, 4H and 4I and certain related cases.

What Does the Home Office Consider?

There is no complete statutory definition of good character. The Home Office considers the applicant’s conduct and circumstances as a whole.

Relevant matters may include:

• criminal convictions and sentences;
• pending prosecutions or criminal investigations;
• terrorism, war crimes or international crimes;
• deception or dishonesty;
• immigration breaches;
• illegal entry;
• financial conduct, including tax and debt matters;
• fraud in dealings with government departments;
• notoriety or conduct considered harmful to the public good; and
• failure to disclose material information.

A conviction does not necessarily produce the same outcome in every case. The nature of the offence, sentence, age of the applicant, passage of time and surrounding circumstances may all be relevant.

Children Aged 10 or Over

A child aged 10 or over may be required to satisfy good character even where the conduct occurred while they were a minor.

The decision-maker should consider the child’s age, maturity, circumstances and best interests. Youth offending should not simply be treated in the same way as equivalent adult conduct.

Immigration History and Illegal Entry

Under current Home Office policy, an application made after 10 February 2025 will normally be refused where the applicant entered the UK illegally, regardless of when the illegal entry occurred.

“Normally” does not mean that refusal is legally automatic. The Home Office must still consider the individual facts, any applicable statutory obligations and whether there are circumstances justifying departure from policy.

Immigration breaches, overstaying, unlawful working and deception may also be relevant. The weight attached to them will depend on the applicable policy and facts.

Disclosure

Applicants should disclose convictions, penalties, immigration issues and other potentially relevant matters accurately.

Attempting to conceal a matter will frequently cause greater difficulty than the underlying issue. A failure to disclose may itself be treated as evidence of deception or dishonesty.

The current good-character guidance was updated on 30 April 2026 and sets out the Home Office’s approach to criminality, financial conduct, deception and immigration-related issues.

12. Documents Required for a British Citizenship Registration Application

The documents required will depend on the statutory route. There is no single evidence checklist suitable for every registration application.

Relevant evidence may include:

Identity and Nationality Evidence

• current and previous passports;
• national identity documents;
• immigration documents;
• evidence of another form of British nationality;
• citizenship or nationality certificates; and
• evidence from foreign nationality authorities.

Birth and Parentage Evidence

• full birth certificates;
• parents’ birth certificates;
• adoption certificates;
• marriage and divorce certificates;
• evidence of paternity;
• parental-responsibility orders; and
• DNA evidence where appropriate.

Evidence of a Parent’s British Citizenship or Settled Status

• British passports;
• naturalisation or registration certificates;
• indefinite leave documentation;
• evidence of settled status;
• historic immigration records; and
• evidence of the date status was acquired.

Residence and Absence Evidence

• travel records;
• passports containing entry and exit stamps;
• school records;
• employment records;
• tax records;
• tenancy agreements;
• council-tax records;
• medical records; and
• evidence explaining excess absences.

Historical Nationality Evidence

• historic passports;
• colonial birth and marriage records;
• consular registrations;
• naturalisation records;
• certificates of citizenship;
• records relating to a parent or grandparent;
• historic correspondence with government departments; and
• evidence of the law in force at the relevant time.

Evidence Supporting Discretion

A discretionary application may require evidence concerning:

• the applicant’s family and private life;
• education and integration;
• length of residence;
• the child’s best interests;
• the applicant’s future in the UK;
• compelling or exceptional circumstances;
• the practical consequences of refusal; and
• why a departure from usual Home Office policy is justified.

Documents not in English or Welsh should normally be accompanied by a full certified translation.

13. How to Apply to Register as a British Citizen

Identify the Correct Statutory Route

The first stage is to determine:

• whether the applicant is already British;
• whether the applicant has a statutory entitlement;
• whether the application is discretionary;
• which provision of the British Nationality Act 1981 applies;
• which form must be used; and
• what form of citizenship will be acquired.

Using the wrong form or provision may lead to delay, rejection or refusal.

Complete the Correct Application

Many registration applications can be made online. Some specialist routes continue to use a paper form.

The applicant must answer all questions accurately and provide a clear account of relevant nationality, residence and immigration history.

Where discretion is required, the application should include legal and factual representations explaining why registration should be granted.

Provide Biometrics and Supporting Documents

Applicants may be required to provide fingerprints and a facial photograph.

Supporting documents are normally uploaded electronically or provided through the process specified after submission.

Applicants should comply with any request for further information within the stated time limit.

Referees

Most citizenship applications require two referees who satisfy the applicable requirements.

The referees confirm the applicant’s identity and that the photograph is a true likeness. Different requirements may apply depending on the applicant’s age and place of residence.

Home Office Consideration

The Home Office may:

• verify the applicant’s identity;
• check immigration and criminal records;
• request additional documents;
• contact referees;
• investigate nationality history;
• obtain information from other public bodies; or
• invite representations on an adverse issue.

A detailed or historically complex application may take longer than the standard processing period.

Decision and Registration Certificate

If the application is approved, an adult will normally be invited to attend a citizenship ceremony.

A child who remains under 18 at the conclusion of the application will not normally attend a ceremony. The certificate of registration will be issued in accordance with the Home Office process.

The applicant should check the certificate carefully and request correction promptly if any information is inaccurate.

The Home Office maintains a current collection of registration forms and guidance for the different statutory routes.

14. British Citizenship Registration Fees

The following fees apply as at 2 August 2026:

Application	Fee
Standard adult registration application	£1,540
Adult citizenship ceremony	£130
Usual total for standard adult registration	£1,670
Standard child registration application	£1,000
Ceremony fee if child turns 18 before the application is decided	£130
Adult Irish-citizen registration	£723
Child Irish-citizen registration	£607
Sections 4C, 4G, 4H and 4I corrective registration	£130 ceremony fee only
Reconsideration of a refused nationality application	£513
Priority service, where available	£500 in addition to the application fee

No application fee is ordinarily charged under certain corrective registration provisions, although an adult ceremony fee may still be payable.

A fee waiver may be available for a child under 18 where the applicant and their parents or carers cannot afford the registration fee. Affordability must be evidenced and the fee-waiver request should normally be determined before the substantive registration application is submitted.

Fees can change. The current fee should be checked immediately before applying.

The official nationality fee table was updated in April 2026 and distinguishes between the application fee and the adult ceremony fee.

15. How Long Does a Registration Application Take?

The Home Office’s standard service level for citizenship applications is six months.

Some applications are decided more quickly, while others take longer because:

• further evidence is required;
• the nationality history is complex;
• checks must be conducted with another government department;
• overseas records must be verified;
• a good-character issue requires investigation;
• the Home Office is considering the exercise of discretion; or
• the case raises an unusual point of law or policy.

Citizenship Priority Service

Eligible applicants applying from within the UK may be able to purchase the citizenship priority service that was introduced on 20 July 2026..

The additional fee is £500. The Home Office states that a citizenship decision will usually be made within 30 working days.

The service is not available for every applicant or application. It does not guarantee that the application will be granted or that no further enquiries will be necessary.

There is no super-priority service for citizenship applications.

An applicant must continue to comply with any immigration requirements applying to them while the registration application is pending. A pending citizenship application does not normally extend existing immigration permission.

The current MN1 guidance confirms a six-month service standard and the availability of the priority service for eligible in-country applicants. The general priority-service guidance states that citizenship applications are usually decided within 30 working days under that service.

16. Citizenship Ceremonies and When Citizenship Takes Effect

A successful applicant who is aged 18 or over will normally be required to attend a citizenship ceremony.

The applicant must ordinarily attend within three months of receiving the Home Office invitation.

At the ceremony, the applicant will make:

• an oath of allegiance, or an affirmation; and
• a citizenship pledge.

The applicant will then receive their certificate of registration.

British citizenship generally takes effect when the statutory ceremony and registration requirements have been completed, rather than merely when the Home Office sends its approval decision.

A child who turns 18 while the application is pending will normally be required to attend a ceremony and pay the additional ceremony fee.

After becoming British, the person may apply for a British passport. A registration certificate is evidence of citizenship but is not a travel document.

17. Common Reasons British Citizenship Registration Applications Are Refused

A registration application may be refused because:

• the applicant is already a British citizen and the route is therefore inappropriate;
• the wrong statutory provision has been relied upon;
• the applicant does not satisfy an age requirement;
• an application that had to be made before age 18 was submitted too late;
• the parent was not British or settled at the legally relevant time;
• the required residence period has not been established;
• absences exceed the statutory limit and discretion is not exercised;
• parentage or citizenship has not been proved;
• parental consent requirements have not been addressed;
• the applicant does not satisfy good character;
• relevant information was omitted or incorrectly stated;
• the evidence does not establish historical legislative unfairness;
• no causal connection has been shown between a public-authority error and the failure to acquire citizenship;
• the applicant has not established statelessness;
• another nationality is available under the applicable statutory test; or
• the Home Office is not persuaded to exercise a discretionary power.

A refusal should identify the statutory provision considered, the facts found and the reasons why the requirements or policy criteria were not met.

Where the decision does not engage with material evidence or applies the wrong legal test, it may be open to challenge.

18. What Can I Do if Registration Is Refused?

There is generally no statutory merits appeal against the refusal of a British citizenship registration application.

The appropriate next step will depend on the reason for refusal.

Requesting Reconsideration

A person may request reconsideration where they believe the Home Office:

• made an error of law;
• applied the wrong policy;
• overlooked relevant evidence;
• relied on a factual mistake;
• failed to follow the correct procedure; or
• reached a decision inconsistent with the applicable nationality law.

Reconsideration is not simply an opportunity to repeat the original application or provide evidence that should reasonably have been submitted earlier.

As at 2 August 2026, the fee for reconsideration is £513.

Making a Fresh Application

A fresh application may be preferable where:

• a statutory requirement has subsequently been met;
• better evidence is now available;
• an earlier evidential deficiency can be corrected;
• the applicant’s circumstances have materially changed; or
• the original application relied on the wrong route.

The applicant will normally have to pay a new application fee.

Judicial Review

Judicial review may be appropriate where a refusal is arguably unlawful, irrational or procedurally unfair.

Possible grounds may include:

• applying the wrong statutory test;
• failing to consider relevant evidence;
• taking an irrelevant matter into account;
• failing to consider a child’s best interests;
• applying policy inflexibly;
• giving legally inadequate reasons; or
• reaching a conclusion not reasonably open to the decision-maker.

Judicial review is concerned with the lawfulness of the decision-making process. It is not an ordinary appeal in which the court simply substitutes its own view of whether citizenship should be granted.

The Home Office’s current forms collection includes Form NR for requesting review of a refusal.

19. Frequently Asked Questions: British Citizenship by Registration

Is Registration the Same as Naturalisation?

No. Registration and naturalisation are separate legal methods of acquiring British citizenship. Registration applies to specified categories of children and adults, while naturalisation is generally used by adults who satisfy residence, immigration status, language, knowledge and good-character requirements. The correct route depends on the applicant’s individual circumstances.

How Do I Know Whether I Am Already a British Citizen?

British citizenship may have been acquired automatically at birth, through adoption or because of a parent’s status. The answer depends on the applicant’s date and place of birth, their parents’ citizenship and immigration status and the nationality legislation in force at the time. Status should be checked before a registration application is made.

Is Registration an Entitlement or Discretionary?

It can be either. Some provisions create an entitlement once all statutory requirements are met. Others, including section 31 for children and section 4L for historical unfairness and related circumstances, require the Secretary of State to exercise discretion. The application should identify clearly which type of route applies.

Can an Adult Register as a British Citizen?

Yes. Adult registration routes include section 14 for people born in the UK who lived here during the first 10 years of life, section 4AA for qualifying Irish citizens, historical-discrimination provisions, section 4L, routes for existing British nationals and resumption after renunciation.

Can a Child Born in the UK Register After Living Here for 10 Years?

A person born in the UK on or after 1 January 1983 may be entitled to register after reaching age 10 if they were not absent for more than 90 days in each of the first 10 years. The Home Office has discretion to disregard excess absences. The route remains available in adulthood.

Can a Child Register if Neither Parent Is British?

Potentially. A UK-born child may acquire an entitlement if a parent later becomes British or settled, or after living in the UK for the first 10 years. A child may also be registered at the Secretary of State’s discretion under section 31, depending on their individual circumstances.

Do All Registration Applicants Need to Satisfy Good Character?

No. Good character applies to applicants aged 10 or over only where the relevant statutory provision requires it. It does not apply to certain corrective routes addressing historical discrimination, including sections 4C, 4G, 4H and 4I.

Can an Irish Citizen Register as British?

An Irish citizen may register under section 4AA after five years’ qualifying residence in the UK, subject to physical-presence, absence, lawful-residence and good-character requirements. The Secretary of State has limited discretion concerning specified residence conditions in special circumstances.

How Much Does British Citizenship Registration Cost?

As at 2 August 2026, standard adult registration costs £1,540 plus a £130 ceremony fee. Standard child registration costs £1,000. Different fees apply to Irish citizens and certain corrective routes. Eligible children may apply for a fee waiver where the fee cannot be afforded.

Can a Refused Registration Application Be Appealed?

There is generally no ordinary statutory appeal. Depending on the circumstances, the applicant may request reconsideration, submit a fresh application or pursue judicial review. The appropriate option depends on whether the refusal resulted from an evidential deficiency, changed circumstances or an arguably unlawful decision.

Will I Be British by Descent After Registration?

It depends on the statutory provision. Some registration routes confer citizenship by descent, while others confer citizenship otherwise than by descent. This affects whether citizenship can normally be transmitted automatically to a child born outside the UK.

Can I Apply From Outside the UK?

Many registration routes permit an application from outside the UK, although the procedure, application form and ceremony arrangements may differ. Residence-based routes will still require the relevant UK residence conditions to be satisfied. Applicants should use the process specified for their location and statutory route.