Form AN contains a sentence worth reading before anything else: "A British passport will not be issued in a different name from the one in a person's foreign passport or travel document." Your certificate of naturalisation follows your official documents, your British passport follows your foreign passport, and every translated document in the file has to agree with both.
The stakes are high. Naturalisation costs £1,839 (£1,709 to apply and £130 for the ceremony), and Guide AN warns that an application sent without its supporting documents "will be returned to you unprocessed".
This guide covers the documents in a citizenship file that are not in English, the standard their translations should meet, and how marriage, absences, good character and registration routes change the list.
Do you need certified translations for a British citizenship application?
In practice, yes, for every document you submit that is not in English: a caseworker can only weigh what they can read.
The nationality guidance says surprisingly little about format. Guide AN (July 2026) and Form AN (version 03/26) list the evidence you need but contain no translation rules. The guides for registering through a British parent say only: "Please provide any translations if these are applicable."
The detailed standard sits in the Immigration Rules. Paragraph 39B(f) requires the original-language document plus "a full translation that can be independently verified". The translation must be dated and include:
- "confirmation that it is an accurate translation of the original document";
- "the full name and signature of the translator or an authorised official of the translation company";
- "the translator or translation company's contact details"; and
- for leave to remain or indefinite leave to remain, "certification by a qualified translator and details of the translator or translation company's credentials."
Strictly, 39B(f) governs immigration applications, not nationality ones, but the same department decides both, and a translation meeting all four points gives a caseworker nothing to query. Our guide to what a certified translation is in the UK explains each element.
Which citizenship documents usually need translating?
| Document | When you need it | Where the requirement comes from | Translation notes |
|---|---|---|---|
| Marriage or civil partnership certificate | Spouse route, section 6(2) | Guide AN: with your spouse's British passport or naturalisation certificate | Registration number, date, place, both names, every stamp and annotation |
| Proof of a name change | The name you use differs from your passport | Form AN: "you must send evidence of the change of name" | A foreign marriage or name-change certificate, in full |
| Birth certificate | Only as identity evidence, or for a registration route | Guide AN identity list; Guides UKM and UKF | The full version naming the parents |
| National identity card | Only as identity evidence | Guide AN identity list | Both sides |
| Overseas degree certificate | English route through Ecctis | Guide AN: the degree plus Ecctis statements of its level and, for some countries, of English-medium teaching | Ecctis statements are in English; the certificate may not be |
| Evidence behind excess absences | Absences over 450 days (270 on the spouse route) or 90 days in the last year | Guide AN absence tables | Hospital records, death certificates, letters from employers abroad |
| Records of an overseas conviction or penalty | Good character declaration | Guide AN: "all criminal convictions in the UK and overseas" | Judgment and sentence, translated exactly |
Some evidence needs no document at all. Guide AN takes your Life in the UK test reference number ("You do not normally need to send the certificate"), secure English language test results are checked by reference number, and your eVisa by application number or share code. Passports rarely need translating; our passport and ID translation guide covers the exceptions.
What if you married abroad or changed your name?
Section 6(2) applicants must provide "your spouse's or civil partner's current passport or naturalisation/registration certificate showing that they are a British citizen, as well as the marriage certificate or civil partnership certificate." For a marriage registered abroad, that certificate is often the only foreign-language document in the file, and it carries the whole 3-year route: Guide AN adds that "Being in a relationship is not sufficient to meet the statutory requirement."
Names are where files stall. Form AN asks for your name "as it appears on your passport", demands evidence of any other name you use, and warns: "We will not normally issue a certificate of registration or naturalisation in the name that is different from a person's official documents." HM Passport Office applies the same logic later: for dual citizens, "the name and gender on your non-British passport must match the name and gender you want on your British passport."
So the translation of your marriage certificate should spell both spouses exactly as in their passports, note any different source spelling once, and translate any surname-after-marriage entry as written. See marriage certificate translation in the UK for field-by-field notes.
Do you need to translate evidence for absences or an overseas conviction?
Yes, if it is in another language: both issues are decided on documents.
Absences. On the 5-year route the limits are 450 days outside the UK in total and 90 days in the last 12 months; on the spouse route the total is 270 days. Guide AN allows discretion above those limits and, for the largest excesses, asks whether they resulted from Crown service, the nature of your work, or "exceptional or compelling reasons of an occupational or compassionate nature." Those reasons are proved with documents that are often foreign: a parent's hospital records, a death certificate, a letter from an employer abroad.
The passports you send to show residence rarely need translating: the Home Office will "check Home Office records for entry to and exit from the UK", and documents uploaded with earlier applications, including translations from your indefinite leave to remain file, need not be sent again.
Good character. You must declare convictions and out-of-court disposals in the UK and abroad, including fines, cautions and warnings. The Home Office's caseworker guidance (version 7.0, April 2026) is blunt: "Any overseas conviction or non-custodial sentence must be treated in the same way as one imposed in the UK. The starting point will always be the sentence imposed." The translation of a foreign judgment must therefore render the sentence exactly: immediate or suspended, the amount and currency of any fine, the dates, and any later decision setting the conviction aside. Applications made since 10 February 2025 will normally be refused if the applicant entered the UK illegally, however long ago.
What about registering as a British citizen instead?
Registration routes run on family documents, usually foreign ones. Two such routes are UKM, for people born before 1983 to a British mother, and UKF, for people born to a British father who was not married to their mother. For adults, both cost only the £130 ceremony fee; most other adult registrations cost £1,670 in total.
Guide UKM (August 2026) asks for your passport and "Your full birth certificate (one which includes the name of your parent(s), which should be requested from the relevant authorities in your country of origin)", your mother's full birth certificate with proof of her citizenship, and marriage certificates showing any change of family name. Where the claim runs through a grandparent, their marriage and birth certificates join the file. The guide suggests enclosing a family tree, and the Home Office decides on the balance of probabilities.
Guide UKF accepts as proof of paternity a birth certificate issued within 12 months of your birth that names your father, if you were born before 10 September 2015. Otherwise you need other evidence, such as DNA test reports from a company on the government's accredited list or a court order.
In a chain of certificates, consistency matters as much as accuracy: one spelling per person across every generation, every marginal note translated, and a family tree that matches. Most children register on Form MN1; see children's citizenship documents.
Why citizenship applications get delayed over documents
- Names that do not line up. Foreign passport, marriage certificate translation and Form AN show three versions of one surname.
- A translation without the original. 39B(f) asks for "the version in the original language" as well; upload both together.
- A summarised judgment. A suspended sentence rendered as a "warning", or a fine with no currency.
- Untranslated compassionate evidence. Discretion over absences depends on records the caseworker can read.
- A broken registration chain. A grandmother's birth certificate translated, but not the marriage certificate explaining her change of surname.
- A foreign passport still in your old name. Change it first, or the British passport application stalls.
Checklist: translations for a citizenship application
Questions people ask
Do I need my birth certificate translated for naturalisation?
Usually not. Guide AN lists a birth certificate as one of several identity documents, alongside a passport, national identity card or Home Office travel document, so most applicants never use it. You do need it for registration routes such as UKM and UKF, which ask for your full birth certificate naming your parents.
Can I reuse the translations from my ILR application?
Often, yes. Guide AN says documents uploaded with previous immigration applications need not be sent again, because the Home Office holds them. If you do submit a document again, such as your marriage certificate, an earlier translation works if it translates the same copy and meets the 39B(f) points; the rules set no expiry date for a translation.
Do my referees need to see or sign the translations?
No. Your two referees endorse the application and confirm your identity: one must be a professional person, the other a British passport holder who is a professional or over 25, and each must have known you for at least 3 years. They do not certify documents, and neither may be your solicitor or agent for the application.
Who can translate documents for a citizenship application?
The nationality guidance does not say. Use an independent professional translator or translation company whose translation is dated and signed, gives contact details and states the translator's credentials, which is what paragraph 39B(f) requires for leave to remain and settlement applications. A translation by you or a relative usually cannot meet the qualified translator point and gives the caseworker a reason to doubt it.
Do I need my passport translated for citizenship?
Rarely. Passport data pages carry captions in English, French or Spanish and names in Latin letters, and the Home Office checks its own records of your entries and exits. Translate a page only if you rely on something written in another language, such as an endorsement recording a name change.
Do citizenship documents need an apostille or a notarised translation?
No. Guide AN, Form AN and the UKM, UKF and MN1 guides ask for neither, and the 39B(f) standard asks for the original-language document plus a signed, dated translation. Apostilles matter when a UK document goes abroad, for example if your other country later asks to see your certificate of naturalisation.
How long does a decision take, and when should I order translations?
Guide AN says you will usually get a decision within 6 months; the priority service, £500 on top of the fee, usually takes 30 working days. Order translations before you apply, because you upload documents or have them scanned at your UKVCAS appointment, and biometrics must usually be enrolled within 45 days.
How much do citizenship translations cost?
Official Translations charges £29.95 per page, a page being up to 300 words, with a signed certificate of accuracy that meets all four points of paragraph 39B(f) and gives the company's credentials as a member of the Association of Translation Companies (ATC). Most one-page certificates arrive as a signed PDF by email within 24 hours, and longer documents such as court judgments take 1 to 3 business days.
