Immigration United KingdomImmigrant

How to Apply for British Citizenship (Naturalisation)

Last reviewed: October 2026
Verified against official agency guidelines

You must live in the UK for 5 years. You must then have settled status or indefinite leave for 12 months. Next, pass the Life in the UK testLife in the UK Test — The 24-question computer test on British history, traditions, and government required for most citizenship and settlement applications.Click for official info ↗. Pass an English test too. Apply on Form AN with referees. Go to a citizenship ceremony. Then you become British.

At a glance

Cost:
£1,839 total (application £1,709 + ceremony £130, 2026)
Total time:
About 6 months
Steps:
8 steps
Where to apply:
gov.uk

Last reviewed October 2026 against official sources. Re-checked every 6 months · next review due April 2027.

Citizenship oath ceremony and naturalization paperwork
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Difficulty
Hard
Total Time
About 6 months
Cost
£1,839 total (application £1,709 + ceremony £130, 2026)
Steps
8 steps
Reviewed
October 2026

The Steps

Follow these in order

Each card shows the phase, expected time, and any cost. Data checked against official UK sources(October 2026).

0 of 8 steps

Be Careful

Don't make these mistakes

Applying before you meet the residence rule. You need 5 years of living in the UK with no long breaks, and you must have been in the UK on the day 5 years before you apply. You must not have spent more than 450 days outside the UK in total, or more than 90 days outside in the last year. Most people must also have held settled status for 12 months, unless they are married to a British citizen and need only 3 years.

Leaving out time abroad or a conviction. Tell the truth about all your time outside the UK, any convictions, and your immigration history. Leaving things out is the top reason for refusal.

Booking the Life in the UK test unprepared. The test is only in English, Welsh, and Scottish Gaelic, and you cannot have an interpreter. Practise the English questions before you book, since each try costs £50.

Choosing the wrong referees. You need two referees. One must have a professional job, like a teacher or a civil servant. The other must be a British citizen aged 25 or over. They must have known you for 3 years, and both must sign your photo and your declarations.

Booking travel before you are approved. It can take up to 6 months to get a decision. Do not book travel for a ceremony until you are approved. Once approved, the ceremony must happen within 3 months of the decision letter.

Losing your certificate of naturalisation. The certificate proves you are a citizen. Keep it safe for life. A new one takes a long time and costs a lot.

FAQ

Frequently Asked Questions

I have settled status under the EU Settlement Scheme. Can I naturalise?

Yes. Settled status counts as settled residence when you apply to become British. You need 5 years of living in the UK with no long breaks. That is usually 6 years in total. It includes 12 months with settled status. You also need the Life in the UK test and the English test. It is the same as for people with ILR.

Do I lose my original citizenship?

The UK lets you have dual nationality. But your first country may not. Check its rules before you apply. Some countries take your citizenship away at once if you become a citizen of another country. Other countries make you give it up first.

What if my application is refused?

No. If your application is refused, you cannot appeal in the normal way. This is different from visa refusals. The Home OfficeUK Home Office — The government department responsible for visas, immigration, and citizenship in the UK.Click for official info ↗ can look at the decision again. That costs a £513 fee. Or you can apply again. People are often refused because they failed a test, did not explain time outside the UK, or did not declare a small conviction. Get legal advice before you apply again.

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