British citizenship by naturalisation

A clear starting point

Assess nationality eligibility, residence and good character before you apply. This page sets out the questions to consider before choosing an application and paying any charges.

Adults exploring naturalisation after obtaining qualifying settled status or another eligible immigration position. The correct approach depends on the exact permission, application location and immigration history involved. A similar-looking case may be subject to a different rule or transitional arrangement.

Who is this for?

Adults exploring naturalisation after obtaining qualifying settled status or another eligible immigration position.

General eligibility and requirements

Nationality rules distinguish different applicant circumstances, including spouses of British citizens. Check residence, absences, immigration history, good character and language or test requirements.

Check the current official guidance for the intended submission date. If you have a previous refusal, an approaching expiry date or a change in circumstances, include that in your initial enquiry. These details may affect what is possible and how urgently you need advice.

Supporting documents

A useful evidence file addresses the specific requirements, with clear dates and consistent personal details. Depending on your circumstances, the following may be relevant:

• Passports and travel history
• settled status evidence
• referees
• language and Life in the UK evidence
• marriage certificate if relying on a British spouse

This is a preparation list, not an exhaustive submission checklist. Check required formats, relevant evidence periods and translation requirements. Keep an exact copy of the final application and evidence. See our document preparation guide for a practical way to organise your records.

The application process

1. Establish the correct naturalisation basis, including any British spouse relationship. Check settled status, residence dates, absences and the relevant qualifying period.
2. Review good character and immigration history alongside language and Life in the UK evidence. Obtain suitable referees and reconcile identity or name changes.
3. Submit the appropriate nationality application and follow identity and ceremony instructions if approved. Citizenship is a separate decision from immigration settlement.

For appeals, protection and employer compliance matters, the relevant procedure may be a review, tribunal process or ongoing duty rather than a visa application. The official source below identifies the appropriate starting point.

Government fees & processing times

Professional fees are separate from government charges. Ask for a written quote confirming scope, any VAT, exclusions and additional costs. Our fees information explains what to clarify. Paying for a faster service does not guarantee approval or a decision by a particular date.

Common issues to consider

Overlooking exact residence dates, assuming settlement guarantees citizenship and failing to disclose matters relevant to good character.

Where a record is missing or inconsistent, explain the issue honestly and establish which evidence can address it. Do not amend a document to make it appear to meet a requirement. For help preparing for a discussion, read our consultation preparation guide.

Frequently asked questions