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For individuals and families

British citizenship and naturalisation

Naturalisation as a British citizen is a discretionary application, not an automatic entitlement that follows from settlement. Each requirement — residence, absences, good character, language and the Life in the UK test — is assessed separately, and the Home Office can refuse even where most of them are met.

Scope of work

What we do

  • Eligibility and timing reviews for naturalisation after ILR or settled status
  • Absence calculations and physical-presence checks for the 5-year and 3-year spouse routes
  • Advice on the good character requirement, including previous refusals and immigration history
  • Life in the UK Test and English language requirement planning
  • Referee checks, document preparation and application submission
  • Reviews of citizenship refusals and advice on reapplying

Who this is for: People applying for British citizenship after settlement

Naturalisation is not an automatic entitlement

Holding indefinite leave to remain or settled status does not by itself entitle you to citizenship. Naturalisation is granted at the discretion of the Home Secretary, and the statutory requirements in the British Nationality Act 1981 must be met or, where the law allows, discretion must be exercised in your favour. We will always tell you honestly where an application is weak rather than encourage an application that is likely to be refused.

The main routes

  • The 5-year route: naturalisation after five years' lawful residence, usually with ILR or settled status held for at least 12 months
  • The 3-year spouse or civil partner route: applying as the spouse or civil partner of a British citizen after three years' residence, with no 12-month wait after settlement
  • Naturalisation after settled status under the EU Settlement Scheme, which follows the same residence and absence rules
  • Registration, a different legal process that applies mainly to children and certain specific categories — it is not the same as naturalisation and follows different rules

Residence, physical presence and absences

You must usually have been physically present in the UK at the start of the relevant qualifying period — exactly five or three years before the date the Home Office receives the application. Absences are limited: in general terms no more than 450 days outside the UK during the five-year qualifying period (270 days for the three-year spouse route) and no more than 90 days in the final 12 months. Absences are calculated from passports and travel records, not from memory, and excess absences need a careful explanation because discretion is not guaranteed.

Immigration status and freedom from time restrictions

You must be free from immigration time restrictions — meaning ILR, settled status or indefinite leave to enter — and, on the five-year route, must usually have held that status for at least 12 months before applying. Your immigration history during the qualifying period must also have been lawful; gaps and overstays need to be addressed openly.

Life in the UK and English language requirements

Most applicants must pass the Life in the UK Test and meet the English language requirement at B1 level or above, unless an exemption applies because of age, a qualifying nationality, a degree taught in English, or a medical condition. Both should be arranged early: test availability and acceptable evidence can delay an otherwise ready application.

The good character requirement

Good character covers criminal convictions, civil judgments, immigration history including deception and overstaying, financial conduct such as unpaid tax or bankruptcy, and honesty in the application itself. Past problems do not automatically mean refusal, but they must be declared and explained. Failing to disclose something the Home Office later finds is usually more damaging than the underlying issue.

Referees, documents and the application process

Applications require two referees who meet the published criteria, a set of supporting documents covering identity, residence and status, biometric enrolment, and the application fee. If the application succeeds, citizenship takes effect at a citizenship ceremony, which must normally be attended within a set period. Timing matters throughout: applying too early, before the qualifying period or the 12-month wait is complete, is a common and avoidable refusal reason.

Common refusal and problem areas

  • Absences above the limits without a persuasive explanation
  • Not being physically present in the UK at the start of the qualifying period
  • Applying before ILR or settled status has been held for 12 months on the five-year route
  • Undeclared convictions, penalties or immigration history discovered by the Home Office
  • Referees who do not meet the criteria, or incomplete declarations
  • Evidence of English language or the Life in the UK Test that does not meet the requirements

How we help

A solicitor reviews your residence and absence history against the route you intend to use, advises honestly on timing and on any good character issues, checks your referees and documents, and prepares the application with written submissions where something needs explaining. Where you have been refused before, we review the refusal and advise whether and when a fresh application is sensible.

Related guidance

Related services

Last reviewed: 6 August 2026

Next step

Speak to an immigration solicitor

Tell us briefly what you need and we will confirm the next step. Advice is given by a solicitor, and the scope of work and fees are agreed in writing before substantive work begins.

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