Technical Translation Services in London and the UK

What is the difference between technical translation and localization?

Technical translation converts the linguistic content of technical documents accurately into the target language; localization additionally adapts units, date formats, currency, regulatory references, screenshots, voltage standards, paper sizes and cultural conventions for the target market. Most regulated products need both: the linguistic layer is always present, but a product manual that retains imperial measurements, source-jurisdiction safety standards and English-language UI screenshots is not fit for a target market even if every sentence is correctly translated. Localization is therefore the superset — it adds unit, format, regulatory and cultural adaptation on top of linguistic translation rather than replacing it.

The practical boundary matters for project scoping. A patent filing needs precise technical translation but no localization; a consumer medical device sold in France needs both full linguistic translation and localization for MDR labelling requirements, French ANSM regulatory references, EU plug and voltage standards, and metric units throughout. Understanding which layer — or both — applies to a given document determines the linguist profile, the DTP requirement and the compliance checklist. The table below makes the boundary operational.

Technical translation differs from localization in scope: translation converts source language to target language, while localization also adapts UI, units, currency, and regulatory references per market.

Translation alone suffices for internal engineering memos, patent filings and B2B technical specifications shared between engineering teams. Full localization is required for consumer-facing manuals, software UI, e-learning modules, and any product sold under a target-market regulatory regime. The practical decision rule is straightforward: if the document is read by an end user, regulator or buyer in the target market, full localization is required; if it stays inside engineering or legal workflow, technical translation alone is sufficient. Our London team scopes both services together so that clients do not under-commission — a common and costly error when localization requirements are discovered late in a product-launch timeline.

How is technical translation quality assured under ISO 17100?

ISO 17100 mandates a TEP workflow — Translation, Editing and Proofreading by 3 different qualified linguists — plus documented translator competence, project records, and client feedback handling. ISO 17100 is the international standard that governs translator competence and workflow requirements for translation service providers; certification is awarded after independent audit of both process and resource criteria. Our London agency runs every technical project through this workflow with an added in-country review option for consumer-facing content, giving clients a four-stage quality gate rather than the two-stage minimum common in the general translation market.

Alongside ISO 17100, our quality management system operates under ISO 9001, which is the benchmark standard for quality assurance processes across service industries. The combination means that every technical translation project is governed at both the process level (ISO 9001) and the linguistic-resource level (ISO 17100), with records maintained and available for client audit. This dual certification is significant for regulated industries — medical devices, pharmaceuticals, aerospace — where a translation vendor’s quality documentation is itself subject to inspection by a notified body or regulatory authority.

What is the TEP workflow step by step?

TEP runs in 3 mandatory stages performed by 3 named linguist roles, with an optional 4th in-country review:

1. Translator — an SME linguist produces the target text inside the CAT tool against the active termbase and translation memory, self-revising for numerical and unit accuracy before handover.
2. Editor — a second qualified linguist compares target to source for accuracy, terminology adherence, numerical fidelity and completeness, logging all changes and queries.
3. Proofreader — a third linguist reviews the target language only for fluency, punctuation, typography and house style, without reference back to source.
4. In-country reviewer (optional) — a client-side native subject expert in the destination market signs off on tone and market fit, particularly valuable for consumer-facing regulated content.

How is terminology managed across long-running projects?

Terminology is governed in a centralised termbase linked to translation memory, with client-approved entries locked, version-stamped, and propagated automatically across every linguist working on the account. The termbase locks proprietary and coined terminology across linguists and projects — preventing inconsistency that accumulates across release cycles when multiple translators work on the same product line without a shared reference. Translation memory matches repeated and similar segments from previous projects, cutting long-term cost on product-line documentation by 30–60%. The discount compounds on quarterly release cycles, which is why product-line owners accumulate the greatest savings over multi-year relationships. Machine translation with post-editing is integrated for high-volume, low-risk content within the same quality framework, but is excluded from patent claims, MSDS documents and medical IFUs where human-only workflows are required.

Which languages do you translate technical documents into?

We deliver technical translation across 120+ language pairs, with the deepest SME bench in German, French, Spanish, Italian, Dutch, Japanese, Simplified Chinese, Korean, Arabic and Polish — the 10 highest-demand pairs for UK technical exporters. Every language pair is staffed by a native-speaking linguist with proven experience in the relevant technical field, whether that is engineering, life sciences, software or energy. Native-speaker assignment is non-negotiable for technical content: subtle register differences in a target language — particularly in regulated documents such as medical IFUs and patent claims — are only reliably caught by a linguist for whom that language is primary. Our global network of specialist linguists combines deep subject knowledge with ISO-certified processes to ensure documents are clear, consistent and correct in every language we serve.

Japanese technical translation is a regular workflow for our London desk, covering engineering documentation, medical device IFUs and Japanese-to-English patent claim translation for UK IPO filing. Simplified Chinese and Korean cover the full electronics and automotive document range, including XLIFF software-string localisation and CAD-embedded text. Arabic technical translation serves the energy, defence and medical sectors, with linguists experienced in both Modern Standard Arabic regulatory documents and Gulf-market product documentation.

For language pairs outside the top 10, our 120+ language network provides SME coverage through a vetted roster of specialist linguists, each assessed for subject-matter qualification before being assigned to client projects. Projects requiring translations into multiple languages simultaneously — common for EU 24-language medical device labelling or global software releases — are coordinated through a single London project manager with a unified termbase and translation memory shared across all language teams.

Is AI replacing human technical translators?

AI has compressed cost-per-word in general translation but has not replaced human technical translators, because neural machine translation still mishandles proprietary terms, regulatory phrasing, and safety-critical instructions. The current model is full post-editing by SME linguists on suitable content only.

When is machine translation with post-editing appropriate?

MT with full post-editing fits high-volume, low-risk technical content — internal knowledge bases, support articles, repetitive catalogues — and is unsuitable for patents, MSDS, medical IFUs and safety warnings. The boundary is explicit:

Where does AI still fall short on technical content?

AI underperforms on proprietary terminology, novel domain language, low-resource language pairs, regulated phrasing where wording is legally prescribed, and any content where a mistranslation triggers liability. Specialist niches such as Japanese engineering and medical-device translation continue to grow precisely because SME knowledge and regulatory accountability resist commoditisation.

How do you start a technical translation project with us?

To start a technical translation project, send the source files plus target languages and deadline through our quote form; we respond within 2 working hours with a fixed price, turnaround, assigned SME linguist credentials and a sample if requested. The onboarding sequence:

1. Submit source files and brief via Get a Translation Quote.
2. Receive a fixed quote within 2 working hours with named SME linguist credentials.
3. Approve quote and termbase scope; project manager opens the project.
4. Client engineering review of the initial termbase before translation starts.
5. TEP workflow runs; optional in-country reviewer sign-off.
6. Delivery in source format with translation memory and termbase retained for future cost reduction.

A dedicated project manager liaises between client, linguists and DTP, owning deadline, quality and communication throughout — no ticket queue, no anonymous handoffs.