Difference Between Notarised and Certified Translation
A certified translation confirms linguistic accuracy by a professional translator; a notarised translation adds a UK notary public’s signature verification, not accuracy.
What we do
Our services
What is the core difference between a notarised and a certified translation?
A certified translation is a translator’s signed statement confirming the translation is a true and accurate rendering of the source document, while a notarised translation adds a UK notary public’s attestation verifying the translator’s identity and signature, not the linguistic accuracy itself.
What is a certified translation in the UK?
A certified translation in the UK is a translated document accompanied by a signed and dated certificate of accuracy from a qualified translator or ISO 17100-registered agency, stating the translation is complete and faithful and providing the translator’s credentials, contact details, and company stamp.
What is a notarised translation in the UK?
A notarised translation in the UK is a certified translation that is then signed in front of a notary public, who attaches an official notarial certificate confirming the translator swore an oath as to the accuracy of the translation and that the signature on the document is genuine.
How do certified and notarised translations compare side by side?
Certified and notarised translations differ across 6 dimensions: what is attested, who signs, legal weight in the UK, international acceptance, cost, and turnaround — with notarisation adding an authentication layer on top of an existing certified translation rather than replacing it.
Which type of translation do you actually need?
To decide between a certified and notarised translation, check the exact wording of the receiving institution’s request: ‘certified’ or ‘certified true translation’ means a certified translation is sufficient, while ‘notarised’, ‘notarial certificate’, or ‘sworn before a notary’ requires notarisation on top.
How is a sworn translation different from both?
A sworn translation is produced by a translator who has taken an oath before a court in a civil-law jurisdiction such as Spain, France, or Italy, giving the translation direct legal validity in that country — a category that does not formally exist in UK law but is often required by foreign authorities dealing with UK-issued documents.
Official document translation in the United Kingdom hinges on which authority the receiving institution needs verified — the translator’s competence, or the translator’s identity and signature. That single distinction separates a certified translation from a notarised one, and getting it wrong costs applicants time, money, and rejected submissions to the Home Office, HMCTS, foreign embassies, and overseas courts.
What is the core difference between a notarised and a certified translation?
A certified translation is a translator’s signed statement confirming the translation is a true and accurate rendering of the source document, while a notarised translation adds a UK notary public’s attestation verifying the translator’s identity and signature, not the linguistic accuracy itself. The notary does not read, review, or vouch for the translation’s quality — the notary only witnesses the signing and applies a notarial seal.
What does each attestation actually verify?
A certified translation verifies linguistic accuracy through a professional translator’s statement of truth; a notarised translation verifies the identity of the person who signed that statement through a notary public’s seal. The two attestations answer different legal questions:
- Certified answers: “Is this translation a faithful rendering of the original?”
- Notarised answers: “Did the named translator genuinely sign this certificate in front of an authorised witness?”
What is a certified translation in the UK?
A certified translation in the UK is a translated document accompanied by a signed and dated certificate of accuracy from a qualified translator or ISO 17100-registered agency, stating the translation is complete and faithful and providing the translator’s credentials, contact details, and company stamp. This is the baseline standard accepted by UK government bodies and educational institutions. Our Certified Translation Services in London and the UK deliver this attestation under ISO 17100 quality control.
What must a UK certified translation contain?
A UK certified translation contains 5 mandatory elements: a statement of accuracy, the translator’s or agency’s name and signature, the date of certification, contact details, and the company stamp or ISO 17100 reference.
- A statement declaring the translation is a true and accurate rendering of the source.
- The translator’s or agency’s full name and signature.
- The date the certification was issued.
- Direct contact details — postal address, email, and telephone.
- The company stamp or reference to ISO 17100 registration.
Which UK institutions accept certified translations?
UK institutions that accept certified translations include the Home Office, HM Courts and Tribunals Service, HMRC, UK Visas and Immigration, the DVLA, UK universities, NHS trusts, and UK ENIC for qualification recognition. None of these bodies require notarisation on top when the translator is a member of the Institute of Translation and Interpreting or the Chartered Institute of Linguists, or when the agency is registered to ISO 17100.
Who is qualified to issue a certified translation?
In the UK, certified translations are issued by professional translators who are members of the Institute of Translation and Interpreting (ITI) or the Chartered Institute of Linguists (CIOL), or by translation agencies certified to ISO 17100. These credentials govern translator competence, revision workflows, and quality control:
- ITI — UK professional body whose qualified members issue certified translations accepted by government departments.
- CIOL — UK chartered body whose members issue certified translations for court, immigration, and academic use.
- ISO 17100 — international standard for translation service providers governing translator qualifications, revision, and QC.
What is a notarised translation in the UK?
A notarised translation in the UK is a certified translation that is then signed in front of a notary public, who attaches an official notarial certificate confirming the translator swore an oath as to the accuracy of the translation and that the signature on the document is genuine. Notaries public in England and Wales are regulated by the Faculty Office of the Archbishop of Canterbury. Our Notarised Translation Services in London and the UK handle the entire workflow with partner notaries, so clients avoid booking their own notarial appointment.
What does a UK notary public do during notarisation?
A UK notary public witnesses the translator’s signature, administers the oath or affirmation, applies the notarial seal, and attaches a notarial certificate — the notary does not read or verify the translation itself. The notary’s role is administrative, not linguistic. Accuracy remains the sole responsibility of the qualified translator whose statement of truth appears on the certificate.
When is a notarised translation legally required?
Notarised translations are legally required for documents destined for foreign courts, overseas property transactions, international adoptions, foreign business registrations, and by embassies of civil-law countries such as Italy, Spain, Brazil, and the UAE. Typical trigger scenarios include:
- Registering a UK-issued marriage certificate at a foreign consulate.
- Submitting a power of attorney to an overseas notary or land registry.
- Filing UK company incorporation documents to open a foreign subsidiary.
- Presenting UK court judgments in a civil-law jurisdiction abroad.
- Completing international adoption paperwork for a receiving country’s authorities.
How do certified and notarised translations compare side by side?
Certified and notarised translations differ across 6 dimensions: what is attested, who signs, legal weight in the UK, international acceptance, cost, and turnaround — with notarisation adding an authentication layer on top of an existing certified translation rather than replacing it. Every notarised translation contains a certified translation inside it; the reverse is not true.
Comparison table: certified vs notarised vs sworn vs apostilled translation
The table below compares the 4 attestation types across attesting authority, verifies what, typical UK cost, turnaround, and best-fit use case.
| Type | Attesting authority | Verifies | Typical UK cost | Turnaround | Best fit |
|---|---|---|---|---|---|
| Certified | ITI/CIOL translator or ISO 17100 agency | Linguistic accuracy | From £30 per page | Same-day (under 1,000 words, before 11:00 GMT) | Home Office, HMCTS, HMRC, UK universities |
| Notarised | UK notary public + translator | Translator’s identity and signature | Certified fee + £30–£100 per signature | Add 24–48 hours | Foreign embassies, overseas courts |
| Sworn | Court-appointed sworn translator abroad | Legal validity in civil-law country | Varies by jurisdiction | 3–7 business days | Spain, France, Italy, Germany submissions |
| Apostilled | UK FCDO on top of notarised | International recognition under Hague 1961 | +£30 statutory fee | Add 2–5 business days | Hague Convention signatory states |
How do costs and turnaround differ in London?
London, certified translations start from £30 per page with same-day turnaround for civil documents under 1,000 words placed before 11:00 GMT, while notarised translations add a notary fee of £30–£100 per signature and an extra 24–48 hours for the notary appointment. Indicative cost bands:
- Certified translation — from £30 per page under ISO 17100.
- Notarisation on top — £30–£100 per signature notary fee.
- FCDO apostille — £30 statutory fee per document.
- Combined notarised + apostilled — £120–£230 total on top of the certified translation.
Which type of translation do you actually need?
To decide between a certified and notarised translation, check the exact wording of the receiving institution’s request: “certified” or “certified true translation” means a certified translation is sufficient, while “notarised”, “notarial certificate”, or “sworn before a notary” requires notarisation on top. Never order notarisation on assumption — it costs more and delays delivery without adding legal weight for UK submissions.
Which UK receiving institution requires which attestation?
The Home Office, HMCTS, HMRC, DVLA, NHS, and UK universities accept certified translations, while foreign embassies, overseas courts, international property registries, and some international adoption authorities require notarised or apostilled translations.
| Receiving institution | Required attestation |
|---|---|
| UK Home Office (visa, settlement, citizenship) | Certified |
| HM Courts and Tribunals Service | Certified |
| HMRC | Certified |
| DVLA | Certified |
| General Medical Council (GMC) | Certified |
| UK ENIC (formerly NARIC) | Certified |
| UK universities | Certified |
| NHS trusts | Certified |
| Foreign embassies in London | Notarised, often + apostille |
| Overseas courts (civil-law jurisdictions) | Notarised or sworn + apostille |
| Foreign land registries and companies houses | Notarised + apostille |
When is notarisation redundant for UK submissions?
Notarisation is redundant when the receiving body is a UK government department, UK court, UK university, or UK employer — these accept an ISO 17100 certified translation, and paying for notarisation adds cost and delay without added legal weight. A common trap: UK applicants over-order notarisation because a US-based receiver uses the word “notarized” but actually only needs a UK certified translation. Before paying for notarisation, confirm 3 things:
- The receiving country’s legal system — civil-law jurisdictions require notarisation; common-law jurisdictions do not.
- The exact requirement wording — “certified” alone means certified only.
- Whether an apostille is also needed on top, notarisation without apostille is useless for cross-border use.
Do you also need an apostille on top of the translation?
An apostille is required when a notarised translation is destined for a country that is a signatory to the 1961 Hague Convention, and is issued by the UK Foreign, Commonwealth & Development Office for a £30 statutory fee. The apostille authenticates the notary’s seal for international use. Our Apostille Translation Services in London and the UK handle FCDO legalisation directly, so the notarised document arrives ready for foreign use.
How is a sworn translation different from both?
A sworn translation is produced by a translator who has taken an oath before a court in a civil-law jurisdiction such as Spain, France, or Italy, giving the translation direct legal validity in that country — a category that does not formally exist in UK law but is often required by foreign authorities dealing with UK-issued documents. Where a UK-issued document must land in a Spanish court, a Spanish sworn translator (traductor jurado) is often the only acceptable route. Our Sworn Translation Services in London and the UK route documents to court-appointed sworn translators in the destination country. Three points to remember:
- Sworn translators — appointed by foreign courts, hold a personal legal seal.
- UK certified translation — cannot substitute for a sworn translation in Spain, France, Italy, Germany, or Portugal.
- Common-law countries (UK, Ireland, US, Australia) — do not operate a sworn-translator register; certified translation is the equivalent.
Which documents need certified or notarised translation?
Documents that need certified translation include birth certificates, marriage certificates, academic transcripts, and driving licences, while notarised translation is required for powers of attorney, affidavits, deeds, company incorporation documents, and adoption papers.
Which personal documents most often need certified translation?
Personal documents that most often need certified translation include 6 categories: birth certificates, marriage certificates, divorce decrees, academic transcripts, criminal record checks, and driving licences.
- Birth certificates — certified translation is sufficient for the UK Home Office and universities.
- Marriage certificates — certified for UK use; notarised plus apostille for overseas use.
- Divorce decrees — certified for UK courts and Home Office remarriage applications.
- Academic transcripts and diplomas — certified for UK ENIC and university admissions.
- Criminal record checks (police clearance) — certified for visa and employment vetting.
- Driving licences — certified for DVLA exchange and insurance purposes.
Which legal and business documents need notarisation?
Legal and business documents that need notarisation include powers of attorney, affidavits, statutory declarations, company incorporation certificates, board resolutions, and property deeds destined for use abroad. Notarisation is the near-universal expectation for cross-border legal instruments:
- Powers of attorney for overseas property purchase or sale.
- Affidavits and statutory declarations for foreign court proceedings.
- Certificates of incorporation for foreign subsidiary registration.
- Board resolutions authorising overseas transactions.
- Title deeds and land registry documents for international conveyancing.
- Adoption papers for receiving-country authorities.
How do you order a certified or notarised translation in London?
To order a certified or notarised translation in London, send a clear scan of the source document, confirm the target language and receiving institution, choose certified or notarised, and receive a quote and turnaround — certified translations from £30 per page are delivered same-day for documents under 1,000 words placed before 11:00 GMT under ISO 17100 quality control. The standard workflow uses 5 steps:
- Upload a clear PDF or image scan of the source document.
- Confirm target language, receiving institution, and destination country.
- Select certified, notarised, or notarised + apostille.
- Approve the fixed quote and turnaround.
- Receive digital PDF and, where required, hard-copy delivery by tracked post.
For the wider hub of translation options including corporate and technical files, see our Document Translation Services in London and the UK.