Naturalisation as a British Citizen (2026): Residence, Good Character, English and Life in the UK, and the £1,839 Fee

Naturalisation is the process by which an adult who has lived lawfully in the UK becomes a British citizen. The application is made on Form AN to the Home Office under the British Nationality Act 1981. The applicant must meet five core requirements: residence, immigration status, good character, English language, and the Life in the UK test. Where all five are met and the application is granted, the applicant attends a citizenship ceremony and becomes a British citizen.

The total cost from 8 April 2026 is £1,839, made up of the £1,709 Form AN application fee and the £130 ceremony fee. The Form AN fee is non-refundable even if the application is refused.

This article covers the residence and absence rules, the good character requirement (including the major 2025 illegal-entry change), the English and Life in the UK tests, the fee structure, the application process, and the common reasons applications are refused.

Who is eligible to apply

Five separate requirements have to be satisfied. Missing one is fatal.

1. Residence. Five continuous years lawfully in the UK (three if married to or in a civil partnership with a British citizen).

2. Settled status. Indefinite leave to remain (ILR), settled status under the EU Settlement Scheme, or another form of settled status at the date of application. For most applicants, the ILR or settled status must have been held for at least 12 months before application. Spouses of British citizens can apply immediately on the day they receive ILR.

3. Good character. No serious criminal record, no significant immigration breaches, no tax non-compliance, no deception in previous applications.

4. English language. Demonstrated at B1 CEFR level or higher (Welsh and Scottish Gaelic also accepted). Exemptions apply for applicants aged 65 or over and those with qualifying physical or mental conditions.

5. Life in the UK test. A 45-minute, 24-question test on British history, culture, and government. 75% pass mark required.

The application also requires the applicant to be 18 or over, of sound mind, and to intend to continue to make the UK their main home (or, for those married to British citizens, to live with their British spouse in the UK).

The residence requirement explained

The five-year clock runs from the day five years before the date of the application. The clock for the three-year route runs from the day three years before the application date.

Absence limits within the qualifying period:

Route	Maximum total absence	Maximum absence in the final 12 months
Five-year (general)	450 days	90 days
Three-year (spouse of British citizen)	270 days	90 days

Absences include all days outside the UK, whatever the reason. Holidays, business travel, family emergencies, and consular absences all count. Days spent in transit through UK airports count as days in the UK only if the applicant cleared UK immigration.

The Home Office can exercise discretion to overlook some excess absence where the reason is compelling (employment requirements outside the UK, family bereavement, exceptional circumstances). Discretion is not guaranteed and applications that rely on it should make a clear written case.

Applicants must also have been physically present in the UK on the day exactly five years (or three years) before the application date. Missing this single day refuses the application on technical grounds.

The applicant must not have been in breach of UK immigration laws at any time during the qualifying period. This usually means holding valid leave throughout. Periods of overstaying, even if subsequently regularised, can cause refusal.

The good character requirement

Good character is the most discretionary part of the assessment. The Home Office published guidance lists factors that count against an applicant, but the overall assessment is on the balance of probabilities.

Factors that usually result in refusal:

• A custodial sentence of 12 months or more in any country
• Persistent offending (multiple convictions over time, even for minor offences)
• An offence that caused serious harm to a victim
• Conviction for sexual offences, terrorism offences, or war crimes
• Significant tax debt or HMRC compliance failures

Factors that can result in refusal depending on the facts:

• Recent criminal convictions of less than 12 months
• Cautions, fixed penalties, or out-of-court disposals within the last three years
• Significant driving offences (drink driving, dangerous driving, multiple speeding)
• Deception in any prior immigration application
• Working in breach of visa conditions
• Significant time spent without leave during the qualifying period

The 10 February 2025 illegal entry change. Home Office guidance from 10 February 2025 confirms that illegal entry to the UK is generally a bar to naturalisation, regardless of how long has passed since the entry, subject to limited exceptions. This represents a material tightening that affects applicants who initially entered without leave, even if their immigration position has since been regularised through asylum, family routes, or other regularisation mechanisms.

Applicants with criminal records, immigration breaches, or any of the factors above should obtain specialist advice before applying.

English language and Life in the UK test

The English language requirement at B1 CEFR can be evidenced by:

• A pass at an approved English language test (Secure English Language Test, or SELT) at B1 level or higher in speaking and listening
• A degree-level qualification taught in English from a recognised institution (the degree must have been awarded by an institution on the Home Office's recognised list)
• Being a national of a majority English-speaking country listed in the Home Office guidance (the list includes the USA, Canada, Australia, New Zealand, several Caribbean states, and others)

The Life in the UK test costs £50 and is taken at an approved test centre. It is a multiple-choice test of 24 questions in 45 minutes. The pass mark is 75% (18 out of 24 correct). The Home Office publishes the official handbook used for question content.

Both tests must be passed before the naturalisation application is submitted. Applicants who fail can retake the Life in the UK test after seven days. English tests can be retaken according to the test provider's policy.

The fee structure

The £1,839 total fee from 8 April 2026 breaks down as follows.

Component	Fee
Form AN application fee	£1,709
Citizenship ceremony fee	£130
Total	£1,839

Biometric enrolment is required and may attract a separate fee depending on where biometrics are taken. The £19 biometric enrolment fee applies for most applicants taking biometrics at a UK Visa and Citizenship Application Services (UKVCAS) centre or other Home Office service point.

The Form AN fee is non-refundable. If the Home Office refuses the application, the fee is not returned. This is a major reason why applications that face any good character or residence complexity should be reviewed by a solicitor or OISC adviser before submission.

The ceremony fee is paid separately and is sometimes invoiced after the application is approved.

The application process and ceremony

1. Check eligibility. Confirm residence, settled status, language, and test requirements before paying any fees.

2. Pass the English language test (if not exempt). Allow several weeks to book and complete.

3. Pass the Life in the UK test. Allow two to three weeks to study and book.

4. Complete Form AN online. The application portal at gov.uk takes the application, supporting evidence, and payment of the £1,709 fee.

5. Provide biometrics. Book a UKVCAS or service point appointment to provide fingerprints and a digital photograph.

6. Wait for the decision. Standard processing is typically four to six months. Complex cases or those raising good character or residence questions take longer.

7. Attend the citizenship ceremony. Once approved, the applicant is invited to a citizenship ceremony at the local council. The ceremony involves swearing an oath of allegiance (or making an affirmation) and a pledge of loyalty. The certificate of naturalisation is presented at the ceremony.

8. Apply for a British passport. After the ceremony, the applicant can apply for a British passport. This is a separate application and fee.

Common reasons for refusal

Excess absence from the UK. Even one extra day over the 450 (or 270) day limit can refuse the application unless discretion is exercised. Applicants miscalculate often.

Wrong settled status period. Applying before 12 months have passed since ILR (where the 12-month wait applies) results in refusal.

Failure to meet the language or Life in the UK requirement. Submitting without an approved English test certificate or Life in the UK pass refuses the application. Exemption claims that are not properly evidenced also fail.

Good character issues not disclosed. Failure to declare cautions, fixed penalties, driving offences, or HMRC issues that the Home Office will discover during checks is treated as deception, which itself refuses the application and bars future applications for several years.

Illegal entry history (from February 2025). Past illegal entry now generally bars naturalisation regardless of subsequent regularisation.

Living arrangements that suggest the UK is not the main home. Long absences for work, extended family ties abroad, or property arrangements suggesting the applicant is based elsewhere can defeat the future intention requirement.

When to instruct a solicitor

Many naturalisation applications are straightforward and can be completed without legal help.

Instruct a solicitor or OISC Level 2 or 3 immigration adviser when:

• The applicant has any criminal record, caution, or driving offence
• There is any past immigration breach (overstaying, working in breach of conditions, prior refusal)
• The applicant entered the UK illegally at any point in the past
• The applicant has significant tax debts or HMRC compliance issues
• Absence calculations are close to or over the permitted limits
• The applicant relies on discretion (e.g. compelling reasons for excess absence)
• A previous British citizenship application has been refused
• The applicant is a Crown Servant, member of the armed forces, or has Right of Abode

A refused naturalisation application costs £1,709 in non-refundable fees plus the time, legal fees, and stress of reapplying. The cost of getting advice up front is materially less.

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Current as at 9 June 2026. This is educational. For your specific facts, instruct a qualified immigration solicitor or OISC-registered adviser.

Part of the Janus Compliance UK Immigration cluster. See also: UK Spouse Visa Financial Requirement, Legal hub, Family law, Employment law.