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Citizenship

British citizenship application guide

This page helps you understand the main routes and prepare your documents. Requirements can change and the official application will confirm what you must provide.

Citizenship checklist ILR checklist
Citizenship fees Citizenship questions Guidance by stage
Routes Naturalisation and registration pathways.
Core checks Residence, absences, and route eligibility.
Evidence Identity, status, language, and good character records.

Before you start

01
Confirm route type

Check whether you apply by naturalisation or registration.

02
Validate residence history

Review absences and key date windows before you start your form.

03
Prepare your evidence pack

Collect identity, status, and route-specific supporting documents.

Fees and processing times change often. Always confirm the latest figures and any priority options before applying.
Naturalisation Main route for adults meeting residence and status requirements.
Registration Route used in specific circumstances, often involving children.
Residence checks Absence totals and timing windows can affect eligibility.
Final stage Application review, decision, and citizenship ceremony process.

Documents to prepare

The exact list depends on your route and answers. These are common items to have ready so you can provide them when the form requests them.

Identity and status

  • Current passport and any relevant previous passports
  • Proof of immigration status (eVisa share code or BRP if you have one)
  • Marriage or civil partnership documents (if relevant)

Knowledge and good character

  • Proof of English language ability (if required)
  • Life in the UK Test pass evidence (if required)
  • Details of convictions and civil penalties, if any

Citizenship checklist

Use this as a preparation checklist, then follow the exact document list shown in your official application.

1. Confirm your route

Most adults apply by naturalisation. Some people apply by registration (often children, or specific circumstances).

Read details

2. Check time in the UK

Review residence requirements and absences carefully. If you are married to a British citizen, the rules can differ.

Read details

3. Prepare evidence

Have your identity documents, immigration status proof, and supporting evidence ready before you start the form.

Read details

4. Apply and upload

Apply online, then upload your documents. Your application will show the exact evidence list for your circumstances.

Read details

Preparation checklist

Tick off common items as you gather evidence and complete the form.

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Official starting points: British citizenship overview, Apply for citizenship with ILR, Apply for citizenship with settled status.