What Is a Technical Translation Service?
Technical translation services convert specialist documents — manuals, patents, engineering specs — between languages with terminology accuracy under ISO 17100.
Request a Free Quote
What we do
Our services
What is a technical translation service?
A technical translation service is a professional language service that converts specialist documents — such as engineering manuals, patents, safety data sheets, and software strings — between languages using subject-matter expert linguists, controlled terminology databases, and ISO 17100 revision by a second qualified translator.
Which documents count as technical translation?
Documents that count as technical translation include user manuals, engineering specifications, patents, safety data sheets (SDS), CE and UKCA compliance files, medical device instructions for use (IFUs), API documentation, technical marketing content, and training materials — grouped by regulatory risk rather than industry sector.
Who performs technical translation and what qualifications do they hold?
Technical translation is performed by linguists who combine a translation qualification — such as the DipTrans or a master’s in translation — with verified subject-matter experience, often a prior career or degree in the field (engineering, medicine, law, IT), and who work under ISO 17100 role requirements for translator, reviser, and reviewer.
How does the technical translation process work?
The technical translation process runs in six stages: source-file analysis and quotation, terminology extraction and glossary approval, translation by a subject-matter expert linguist, independent revision under ISO 17100, DTP or localisation engineering, and final quality assurance before delivery in the client’s file format.
How is technical translation different from certified, sworn, notarised, and localisation services?
Technical translation is defined by subject-matter accuracy, while certified translation is defined by a signed statement of accuracy, sworn translation by a court-appointed translator’s seal, notarised translation by a notary public’s endorsement, and localisation by cultural and market adaptation — a single document can require several of these at once.
How much do technical translation services cost in the UK?
Technical translation services in the UK start from £30 per page under ISO 17100 quality control, with pricing driven by word count, language pair, subject complexity, file format, and turnaround — projects above 10,000 words are priced per word with agreed milestone deliveries.
A technical translation service is a professional language service that converts specialist documents between languages using subject-matter expert linguists, controlled terminology, and ISO 17100 revision. It covers manuals, patents, safety data sheets, and engineering specifications where terminology accuracy carries regulatory and safety consequences.
What is a technical translation service?
A technical translation service is a professional language service that converts specialist documents — such as engineering manuals, patents, safety data sheets, instructions for use (IFUs), and software strings — between languages using subject-matter expert linguists, controlled terminology databases, and mandatory ISO 17100 revision by a second qualified translator. It forms a specialist branch within the broader category of Document Translation Services in London and the UK, distinguished by the technical density of the source material and the regulatory consequences of terminological error. Pricing for UK projects starts from £30 per page, reflecting the narrower pool of qualified domain specialists and the heavier revision burden the process demands.
Three attributes anchor the definition:
- Subject-matter expertise — the linguist holds a translation degree or DipTrans plus verified, independent experience in the relevant field (engineering, medicine, IT, or law-technical hybrids), satisfying the ISO 17100 competence criteria.
- Controlled terminology — a client-approved glossary and translation memory enforce consistent target terms across every segment, so the same component name never appears two different ways within the same document set.
- ISO 17100 revision — an independent second linguist revises every project before delivery, applying the four-eyes principle the standard requires and acting as the final quality gate.
Turnaround is calibrated to document volume: projects under 1,000 words submitted before 11:00 GMT qualify for same-day delivery, standard packs return within 24–48 hours, and larger commissions above 10,000 words are managed against agreed milestones to protect quality at scale. The service covers more than 200 languages, spanning the major European, Asian, Middle Eastern, and African language pairs most required for CE marking files, UKCA documentation, and cross-border regulatory submissions.
Which three constraints define a translation as ‘technical’?
Three constraints separate technical translation from general translation: controlled terminology aligned to a client glossary, a linguist with verified subject-matter expertise in the field, and ISO 17100 revision by an independent second translator before delivery. Remove any one of these three and the output stops being technical translation — it becomes general translation with a technical topic, carrying none of the process guarantees that regulated industries require.
- Controlled terminology. A project glossary lists every significant source term alongside its single approved target equivalent. Computer-assisted translation (CAT) tools flag deviations segment by segment, making inconsistency visible and correctable before the revision stage. The translation memory stores every approved segment for reuse, so terminology remains stable across document versions, updates, and future projects within the same product family.
- Subject-matter expert linguist. The translator holds a prior degree or substantive career in the domain — mechanical engineering, pharmacology, patent law, or software development — alongside a recognised translation qualification such as a translation degree or the Diploma in Translation. This dual competence is a formal requirement under ISO 17100, not an optional premium.
- ISO 17100 revision. A second qualified linguist — independent of the translator — checks the target text against the source, resolves terminological discrepancies, and signs off the file. This mandatory step is what distinguishes a technically compliant workflow from a single-linguist service, however experienced that linguist is.
How does technical translation differ from general translation?
Technical translation differs from general translation terminology density, error consequence, and required qualifications. A mistranslated adjective in marketing copy dents brand tone; a mistranslated torque value or dosage instruction in an equipment manual or IFU creates risk of injury, product recall, or regulatory non-conformity. That asymmetry of consequence is precisely why the workflow is more prescriptive and the linguist profile more demanding. Technical rates run 20–35% above general translation base rates because the qualified domain-specialist pool is smaller and every project carries a mandatory dual-linguist revision overhead that general translation treats as optional.
It is also worth distinguishing technical translation from adjacent services that are sometimes confused with it. A certified translation adds a signed statement of accuracy from the translator or agency — it governs legal admissibility, not terminology quality or domain expertise. A sworn translation requires the seal of a court-appointed translator and is not a standard UK requirement, though civil-law jurisdictions across Europe and Latin America routinely demand it. A notarised translation is endorsed by a notary public confirming the translator’s identity, which speaks to document authentication rather than linguistic quality. Technical translation, by contrast, is defined entirely by its process controls and the specialist competence of the people executing them.
| Dimension | General Translation | Technical Translation |
|---|---|---|
| Terminology control | Style guide only | Client glossary + translation memory enforced via CAT tools |
| Linguist profile | Native speaker + translation degree | Native speaker + translation degree + verified domain expertise |
| Revision | Optional proofread | Mandatory ISO 17100 second-linguist revision |
| Error consequence | Reputational | Regulatory, safety, financial recall |
| Typical UK rate uplift | Baseline | +20–35% over general rate |
| Starting price (UK) | Varies | From £30 per page |
| Same-day eligibility | Often available | Under 1,000 words submitted before 11:00 GMT |
Which documents count as technical translation?
Documents that count as technical translation include user manuals, engineering specifications, patents, safety data sheets (SDS), CE and UKCA compliance files, medical device instructions for use (IFUs), API documentation, technical marketing content, and training materials — grouped by regulatory risk rather than industry sector. The regulatory-risk taxonomy matters because it dictates the qualification level of the assigned linguist and the depth of the revision cycle.
| Regulatory risk tier | Document types | Governing framework |
|---|---|---|
| High — safety-critical | Machinery manuals, IFUs, SDS, patient leaflets | EU Machinery Directive 2006/42/EC, EU MDR, UK MDR 2002, CLP |
| High — IP-critical | Patent applications, prior-art searches, claims | EPO, UKIPO |
| Medium — market access | CE/UKCA declarations, technical files, tender submissions | UKCA Marking, CE Marking |
| Standard technical | API docs, developer guides, white papers, training materials | Client governance |
What engineering and manufacturing documents are translated?
Engineering and manufacturing documents translated most often are equipment manuals, machinery installation guides, maintenance procedures, technical drawings with embedded text, CE/UKCA declarations of conformity, tender documents, and bills of materials — shipped as InDesign, AutoCAD, or XML files. The EU Machinery Directive 2006/42/EC requires that machinery instructions and safety warnings be supplied in the official language of the Member State where the machinery is placed on the market; the UK equivalent regime carries the same practical duty for products sold into Great Britain.
What medical and life-science documents qualify?
Medical and life-science documents that qualify as technical translation include instructions for use (IFUs), clinical trial protocols, patient information leaflets, MHRA and EMA regulatory submissions, pharmacovigilance reports, and medical device labelling under EU MDR and UK MDR 2002. These files carry the highest revision burden — a two-linguist workflow plus a monolingual clinical reviewer familiar with the target-market regulator.
What IT, software, and patent documents are covered?
IT, software, and patent documents covered are API references, developer documentation, UI strings, help articles, white papers, EPO and UKIPO patent applications, and prior-art searches — often requiring localisation engineering alongside translation to keep code placeholders, variables, and XML tags intact. Patent translation carries its own sub-discipline: claim language must preserve legal scope in the target jurisdiction, not just literal meaning.
Who performs technical translation and what qualifications do they hold?
Technical translation is performed by linguists who combine a translation qualification — such as the DipTrans or a master’s in translation — with verified subject-matter experience, often a prior career or degree in the field (engineering, medicine, law, IT), and who work under ISO 17100 role requirements for translator, reviser, and reviewer. Without domain expertise, individual words translate correctly while concepts distort — a common failure mode in medical and patent work.
- Translator — produces the first target draft against the glossary and translation memory.
- Reviser — a second qualified linguist compares source and target segment by segment.
- Reviewer — an optional monolingual domain expert checks target-language readability and technical accuracy.
- Proofreader — final layout and typographical check before delivery.
What does ISO 17100 require of technical translators?
ISO 17100 requires each translator to hold a recognised degree in translation, or a degree in another field plus two years of full-time translation experience, or five years of full-time professional translation experience — and mandates independent revision by a second qualified linguist before delivery. The ISO 17100 Certified Translation Quality framework also sets requirements for project management, client agreements, and post-delivery corrections. The standard is defined by the International Organization for Standardization; the full scope sits on the official ISO catalogue entry.
How it works
How does the technical translation process work?
1
How is terminology controlled across a project?
Terminology is controlled through a project-specific glossary and translation memory: the linguist extracts candidate terms from the source, the client approves target equivalents, and CAT tools enforce those choices consistently across every segment and future update. The translation memory then reduces cost and turnaround on later revisions of the same document family — a manual update reuses approved segments rather than starting from zero.
2
What quality assurance steps sit between translation and delivery?
Quality assurance steps between translation and delivery include bilingual revision by a second linguist, monolingual review for readability, automated QA for numbers, tags, and terminology consistency, DTP proofing for layout integrity, and a final sign-off against the client’s brief. Automated QA catches mechanical faults — swapped decimals, missing tags, glossary deviations — that human eyes reliably miss on long files.
How is technical translation different from certified, sworn, notarised, and localisation services?
Technical translation is defined by subject-matter accuracy, while certified translation is defined by a signed statement of accuracy, sworn translation by a court-appointed translator’s seal, notarised translation by a notary public’s endorsement, and localisation by cultural and market adaptation — a single document can require several of these at once. A medical device IFU sold into Spain, for example, needs technical translation for accuracy, localisation for Spanish market conventions, and certified translation when submitted to a regulator.
| Service | Defined by | Typical UK use | Adds to technical translation? |
|---|---|---|---|
| Technical translation | SME linguist + terminology + ISO 17100 | Manuals, patents, SDS, IFUs | — |
| Certified translation | Signed statement of accuracy | Home Office, courts, universities | Yes — for regulatory submission |
| Sworn translation | Court-appointed translator’s seal | Civil-law jurisdictions (Spain, France); not standard in UK | Yes — for foreign courts |
| Notarised translation | Notary public endorses translator identity | Overseas legal filings | Yes — endorsement only, not linguistic quality |
| Localisation | Cultural and market adaptation | Software UI, marketing, e-learning | Yes — for market-facing content |
For submissions to UK government bodies, courts, or regulators, technical translation runs alongside Online Certified Translation Services in the UK — the certification adds the legal validation that the technical translation itself does not provide.
Pricing
How much do technical translation services cost in the UK?
Technical translation services in the UK start from £30 per page under ISO 17100 quality control, with pricing driven by word count, language pair, subject complexity, file format, and turnaround. Projects above 10,000 words are priced per word with agreed milestone deliveries. Rates cover 200+ languages, with common European pairs at the lower end and rarer Asian, African, and Middle Eastern pairs at the higher end.
| Project profile | Pricing model | UK anchor |
|---|---|---|
| Short technical document (under 1,000 words) | Per page | From £30 per page |
| Standard manual or SDS pack (1,000–10,000 words) | Per word | Language-pair dependent |
| Programme above 10,000 words | Per word + milestone delivery | Volume discount via translation memory reuse |
| Rush turnaround | Surcharge | Applied to same-day and out-of-hours work |
Cost drivers to weigh before requesting a quote:
- Language pair. Common pairs (French, German, Spanish ↔ English) sit below rarer pairs (Icelandic, Georgian, Amharic).
- Subject complexity. Patent claims and clinical protocols command a premium over general engineering manuals.
- File format. Editable Word or XLIFF costs less than scanned PDFs or AutoCAD drawings that require engineering rebuild.
- Turnaround. Same-day and weekend delivery carry rush surcharges.
- Translation memory maturity. Repeat clients pay less per word as the memory grows.
What turnaround times are realistic?
Realistic turnaround times are same-day for technical documents under 1,000 words placed London before 11:00 GMT, 24 to 48 hours for standard packs, and agreed milestone delivery for projects above 10,000 words — all under ISO 17100 revision. Turnaround extends when the file format requires DTP rebuild, when the language pair has a thin linguist pool, or when the client’s glossary is still under approval.
| Volume | Turnaround | Condition |
|---|---|---|
| Under 1,000 words | Same day | Placed before 11:00 GMT, common language pair |
| Legal-technical or academic (1,000–5,000 words) | 24–48 hours | Standard file format, ISO 17100 revision included |
| Standard technical pack (5,000–10,000 words) | 3–5 working days | Editable source, approved glossary |
| Above 10,000 words | Milestone delivery | Agreed schedule of partial deliveries |
How do you choose a technical translation service in the UK?
Choose a technical translation service in the UK by verifying ISO 17100 certification, checking subject-matter credentials of the assigned linguist, requesting a sample or paid pilot, confirming terminology and translation-memory ownership terms, and testing turnaround on a realistic word count before committing to a larger programme. The pilot matters more than any credential list — it reveals how the agency handles your actual terminology, your actual file format, and your actual deadline.
- ISO 17100 certification — verify the certificate number and scope, not just a logo on the website.
- Named linguist profile — ask which linguist works on your file and what their domain background is.
- Paid pilot — commission a 500–1,000-word sample from your actual source material.
- Data ownership — confirm in writing that translation memory and glossary remain client property.
- UK GDPR handling — confirm data-processing terms for any file containing personal data.
What questions should you ask a technical translation agency?
Ask a technical translation agency five questions: which ISO standards they hold, how they vet subject-matter expertise, whether translation memory and glossaries remain client property, how they handle confidentiality under UK GDPR, and what happens if a term is disputed after delivery.
Q1. Which ISO standards do you hold, and what is the certificate scope?
A. A compliant agency states its ISO 17100 certificate number and confirms the scope covers the language pairs and subject areas relevant to the project.
Q2. How do you vet subject-matter expertise on the assigned linguist?
A. The agency shows the linguist’s CV or anonymised profile, evidencing a degree or prior career in the domain plus two-to-five years of full-time translation experience.
Q3. Do the translation memory and glossary remain our property?
A. The service agreement grants the client full ownership of the translation memory and glossary, with export in TMX and TBX formats on request.
Q4. How do you handle confidentiality under UK GDPR?
A. The agency signs a data-processing agreement, encrypts files in transit and at rest, and limits access to the named project team.
Q5. What happens if a term is disputed after delivery?
A. The agency corrects any confirmed error free of charge under its ISO 17100 post-delivery corrections clause and updates the glossary and translation memory to prevent recurrence.