How long after ILR can I apply for British citizenship?
Short answer
Twelve months in most cases. You normally need to have held ILR or settled status for at least a year, on top of five years’ continuous lawful residence. Spouses of British citizens are exempt from that 12-month wait and can qualify after three years’ residence instead.
Settlement and citizenship are two separate steps, and naturalisation adds a waiting period on top of the one you have already served. The general rule is that you must have held ILR, settled status or a right of abode for at least 12 months before you apply — and separately have been lawfully and continuously resident in the UK for at least five years immediately before the application date.
The exception is the spouse route. If you are married to or in a civil partnership with a British citizen, the 12-month settlement wait does not apply, the residence requirement is three years rather than five, and you can sometimes apply for naturalisation at the same time as ILR.
The absence limits people fail on
- Five-year route: no more than 450 days outside the UK across the qualifying period, and no more than 90 days in the final 12 months.
- Spouse route: no more than 270 days in total, and again no more than 90 days in the final year.
These are separate from the 180-days-in-12-months rule that governs ILR, so passing one test does not mean you pass the other. Count both.
The other requirements
You must satisfy the good character requirement, which is where most complications arise. UKVI weighs criminal convictions (a sentence of four years or more is a permanent bar in most circumstances), immigration history including overstaying or deception, and financial conduct such as tax evasion. Discretion exists, but non-disclosure is itself a good character problem — declare everything.
You also need English (or Welsh, or Scottish Gaelic) at B1 CEFR or above and a Life in the UK test pass, unless exempt by age or disability. If you passed the test for ILR, that certificate is valid for life and you do not retake it.
The fee is £1,709 for an adult, with a separate £1,000 fee for registering a child. Decisions typically take around six months and there is no priority service for naturalisation, so build that into your plans. Once approved you must attend a citizenship ceremony within 90 days of the invitation, take the Oath or Affirmation, and receive your certificate — after which you can apply for a passport. One point for EU citizens: settled status counts as ILR-equivalent and starts the 12-month clock, but pre-settled status does not.
Related guides
British Citizenship Basics
British citizenship can be obtained in several ways — by birth, descent, registration, or naturalisation. The most common route for immigrants is naturalisation, which is available to most people who have lived lawfully in the UK for at least five years (or three years if married to a British citizen). Becoming a British citizen gives you the right to a British passport, the right to vote in all UK elections, and the ability to pass citizenship to your children.
7 min
Naturalisation Process in Detail
Naturalisation is the formal legal process by which a person who was not born a British citizen becomes one. While the eligibility criteria are covered in the British Citizenship guide, this guide focuses on the practical steps involved in submitting and progressing a naturalisation application.
6 min
Settlement and Indefinite Leave to Remain
Indefinite Leave to Remain (ILR) — also called settlement — gives you the right to live, work, and study in the UK for an indefinite period without immigration restrictions. ILR is a significant step on the pathway to British citizenship and provides much greater security than any time-limited visa. However, ILR can be lost if you spend extended periods outside the UK.
8 min
Citizenship Ceremony Guide
A citizenship ceremony is the formal occasion at which a successful naturalisation applicant officially becomes a British citizen. The ceremony involves taking an oath of allegiance and a pledge to uphold the rights and freedoms of the UK. Until you attend the ceremony, your naturalisation approval is not complete and you cannot obtain a British passport.
4 min
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