Citizenship in United Kingdom
Naturalisation timelines, tests, and dual nationality
Naturalisation as a British citizen is normally available a year after Indefinite Leave to Remain, or immediately at settlement for spouses of British citizens. It requires five years of lawful residence, the Life in the UK test, English at B1, a good character assessment, and attendance at a citizenship ceremony. Dual nationality is permitted by British law.
| Usual route | Naturalisation after around five years' residence and twelve months' settled status source |
| Spouse of a British citizen | Twelve-month wait after settlement is waived source |
| Absence limits | Commonly no more than 450 days over five years and 90 days in the final year |
| Tests | Life in the UK test and English at B1, as for settlement |
| Fee | Commonly in the region of GBP 1,600 plus a ceremony fee |
The timing
The standard sequence is five years of lawful residence, then Indefinite Leave to Remain, then a further twelve months holding that settled status before applying to naturalise. In practice this means citizenship around six years after arrival on a qualifying route.
Spouses and civil partners of British citizens do not serve the additional twelve months and may apply for naturalisation as soon as they hold settled status, subject to a three-year residence requirement in that capacity.
Children born in the United Kingdom to a parent who is settled or British are generally British at birth. Children born here before a parent settles are not automatically citizens but can usually be registered once the parent settles, which is a separate and cheaper application than naturalisation.
Good character
The good character assessment considers criminality, immigration compliance, financial conduct including bankruptcy and unpaid tax, and deception in any earlier application. Immigration breaches within the preceding ten years, including overstaying and working in breach of conditions, are expressly relevant and are a common cause of refusal.
The fee is not refunded on refusal, which makes an honest self-assessment against the published guidance worthwhile before applying.
Referees and the ceremony
Two referees are required, one of whom must generally hold a professional standing and neither of whom may be a relative or the applicant's immigration adviser.
Successful applicants attend a citizenship ceremony arranged by the local council, take an oath or affirmation and a pledge, and receive a certificate of naturalisation. The passport is applied for separately afterwards.
Dual nationality
British law does not require an applicant to renounce another nationality. Whether the other country permits its citizens to hold British nationality is a matter for that country's law, and several require renunciation or treat naturalisation elsewhere as a loss of nationality.
Free: the United Kingdom visa checklist
A one-page PDF listing every document each route asks for, so you can see what you are missing before you spend anything. No spam, unsubscribe in one click.
The list is not open yet, so nothing was sent and your address was not stored. The guides on this site are free and need no sign-up.
We email a short course on how the United Kingdom routes work, then the report offer. Your address is never sold.
Official sources
Checked against these pages in September 2026. Fees and processing times change without notice — confirm before you act.