Chinese Translation Services in London and the UK

Mandarin or Cantonese, Simplified or Traditional — which Chinese translation do you need?

Choose Mandarin Simplified for Mainland China and Singapore, Mandarin Traditional for Taiwan, and Cantonese in Traditional script for Hong Kong and Macau. Spoken assignments require the dialect; written documents require the script — the two decisions are independent.

What is the difference between Mandarin and Cantonese translation?

Mandarin and Cantonese are mutually unintelligible spoken languages: Mandarin (Putonghua) is the official language of Mainland China, Taiwan, and Singapore with approximately 920 million native speakers, while Cantonese (Yue) is spoken by roughly 85 million people in Guangdong, Hong Kong, and Macau. The dialects differ in pronunciation, tone count, grammar, and vocabulary, so a Cantonese interview cannot be handled by a Mandarin-only interpreter.

When should you use Simplified Chinese versus Traditional Chinese?

Use Simplified Chinese for documents and websites targeting Mainland China and Singapore, and Traditional Chinese for Hong Kong, Macau, and Taiwan. The script choice is dictated by the receiving jurisdiction, not by the speaker’s dialect. Simplified characters reduced stroke counts in the mid-twentieth century reform; Traditional characters retain the historical forms used continuously in Hong Kong, Macau, and Taiwan.

The Chinese consulate in London accepts Simplified Chinese for mainland China documents and Traditional Chinese for Hong Kong and Taiwan documents.

The Chinese Embassy in London accepts Simplified Chinese for documents destined for Mainland China and routinely returns submissions filed in Traditional script for re-translation. Notarised translations in Simplified script are the consular standard for legalisation routed to Beijing, Shanghai, and Guangzhou authorities.

Chinese variant decision matrix by destination

The decision matrix below pairs the four written-spoken combinations with their accepting authorities so you brief a translator without ambiguity.

Destination	Written script	Spoken dialect	Typical receiving authority
Mainland China	Simplified Chinese	Mandarin (Putonghua)	Chinese Embassy London, PRC courts, CNIPA
Singapore	Simplified Chinese	Mandarin	ICA Singapore, MOE
Taiwan	Traditional Chinese	Mandarin	Taipei Representative Office, Taiwanese courts
Hong Kong	Traditional Chinese	Cantonese	HKSAR Immigration, HKEX, ICAC
Macau	Traditional Chinese	Cantonese	Macau SAR Identification Services
UK Home Office (inbound)	English target	n/a	UKVI, HMCTS, ENIC, GRO, DVLA

Which Chinese translation services do we deliver?

We deliver eight Chinese translation service lines: certified document translation, sworn translation, notarised translation, legal translation, business and financial translation, patent and technical translation, website and marketing localisation, and Mandarin or Cantonese interpreting — all routed through ISO 17100 translators who are native speakers of the target language variant. Each service line is staffed by specialists who work exclusively within their subject domain, because accuracy in legal, financial, or medical Chinese is not interchangeable with general translation competence. Projects are priced from £30 per page, with turnaround options ranging from same-day to milestone-based delivery for large volumes.

What is certified Chinese translation for the UK Home Office?

Certified Chinese translation for the UK Home Office carries a signed statement of accuracy, the translator’s full credentials, and the agency stamp, satisfying visa, citizenship, and ILR evidential requirements. A certified translation is defined by the translator’s declaration that the output is a true and accurate rendering of the source — a standard the UK Home Office requires for all foreign-language documents submitted as evidence. Pricing starts at £30 per page, and the standard turnaround is 24 hours, with same-day delivery available for documents under 1,500 words ordered before 11:00 GMT. Common document types include birth certificates, marriage certificates, Hukou household registration records, police certificates, and academic diplomas. Every certified translation we issue identifies the translator by name, lists their qualifications, and bears a dated signature, giving case workers the audit trail they need to process an application without requesting further evidence.

What is sworn and notarised Chinese translation?

Sworn and notarised Chinese translations add a UK notary public’s countersignature to the translator’s certification, producing a legally authenticated deed accepted by Chinese courts, Chinese consulates in the UK, and the Foreign, Commonwealth and Development Office when apostille is required. A sworn translation is produced by a court-registered linguist whose standing is recognised by judicial authorities, making it the correct format when a document must be placed before a Chinese court or government body. A notarised translation goes one step further: the notary public attests to the authenticity of the translator’s signature and credentials, creating a document that satisfies consular and institutional demands. Where full international recognition is needed, the notarised translation is then apostilled through the FCDO under the Hague Convention, confirming the notary’s authority for use in any signatory country. The 24 to 48-hour certified turnaround applies to the translation itself; notary attendance adds time to the overall schedule.

What is legal Chinese translation for contracts, litigation, and court evidence?

Legal Chinese translation covers contracts, witness statements, court judgments, arbitration files, and regulatory submissions, handled by translators trained in PRC civil law and Hong Kong common law terminology so that clauses survive cross-border enforcement without ambiguity. Legal translation is among the highest-stakes service lines we operate, because a mistranslated liability clause or an incorrectly rendered party name undermines an entire dispute. Each legal file is paired with a subject specialist who works only within their field, and every translated document undergoes a structured revision pass before delivery. We handle both Simplified Chinese documents originating in Mainland China and Singapore, and Traditional Chinese materials from Hong Kong and Taiwan, ensuring the correct jurisdictional terminology is applied throughout. Confidentiality is enforced through signed NDAs and restricted-access project folders limited to the assigned translator, reviser, and project manager.

What is business, financial, and patent Chinese translation?

Business, financial, and patent Chinese translation services localise annual reports, prospectuses, CNIPA patent filings, and HKEX disclosures, using sector glossaries aligned with CSRC, NMPA, and ICAC terminology. Consistency across long financial documents is critical: a term defined one way in an offering memorandum must appear identically throughout every subsequent clause, schedule, and annex. Our translators maintain controlled glossaries for each client engagement so that regulatory filings, board-level communications, and investor materials all use the same verified vocabulary. Four sector glossaries underpin the work:

• Patent — CNIPA (China National Intellectual Property Administration) claim and abstract conventions, preserving the precise scope of protection intended by the applicant.
• Financial — CSRC disclosure language for A-share filings and HKEX listing rules for Hong Kong issuers, meeting the distinct regulatory expectations of both exchanges.
• Medical and pharma — NMPA (National Medical Products Administration) regulatory terminology for clinical trial documentation and product registration dossiers.
• Anti-corruption and compliance — ICAC and SAMR enforcement terminology for internal investigations, compliance reports, and regulatory correspondence.

How does website and marketing localisation into Chinese work?

Website and marketing localisation into Chinese adapts copy, UX language, measurement units, payment terms, and SEO metadata for Baidu, Sogou, and 360 Search, with separate Simplified and Traditional builds delivered when both Mainland China and Hong Kong audiences are within scope. Effective localisation goes beyond word-for-word translation: brand messages are restructured for cultural resonance, calls to action are rewritten to reflect local payment flows such as WeChat Pay and Alipay, and keyword maps are rebuilt from scratch for each search engine rather than simply translated from English-language research. Simplified Chinese output targets Mainland China and Singapore audiences, while Traditional Chinese output is produced for Hong Kong, Macau, and Taiwan — each build is treated as a distinct deliverable with its own quality review. The result is a digital presence that reads as natively Chinese rather than as a translated import.

Where can I find Mandarin and Cantonese interpreting in London?

Mandarin and Cantonese interpreting in London covers consecutive interpreting for solicitor and Home Office appointments, simultaneous interpreting for conferences, and telephone interpreting for NHS and police interviews, billed by the hour or half-day. With approximately 920 million native Mandarin speakers and approximately 85 million Cantonese speakers worldwide, demand for skilled interpreters spans a wide range of formal settings — from immigration tribunals and criminal hearings to clinical consultations and international trade conferences. Our interpreting roster includes linguists cleared for HMCTS hearings and NHS clinical settings, each matched to the subject matter of the assignment so that specialist terminology is handled accurately under real-time conditions. Remote interpreting via video and telephone is available for same-day bookings where on-site attendance is not possible.

How long does a Chinese translation take?

A Chinese translation takes same-day for documents under 1,500 words ordered in London before 11:00 GMT, 24 to 48 hours for certified and notarised packs, and milestone delivery for projects above 10,000 words, all produced under ISO 17100 quality control. Turnaround is determined by three variables: the word count of the source document, the certification level required, and the complexity of the subject matter — a straightforward birth certificate moves faster than a patent specification or a financial prospectus of equivalent length. Every schedule is confirmed at the point of instruction so that clients know exactly when to expect delivery before work begins.

Project size	Service tier	Turnaround
Under 1,500 words	Certified, London order before 11:00 GMT	Same working day
1,500 – 5,000 words	Certified or notarised	24 – 48 hours
5,000 – 10,000 words	Specialist legal, financial, patent	3 – 5 working days
Above 10,000 words	Milestone delivery with staged review	Per project plan

What is the same-day Chinese translation cutoff?

The same-day Chinese translation cutoff is 11:00 GMT for London orders under 1,500 words; documents submitted after that point are delivered within 24 hours on the next working day. The cutoff exists because every certified translation requires a full revision pass by a second qualified linguist before it leaves our team — a step mandated by the ISO 17100 standard — and that revision window must fall within the same business day to guarantee same-day output. Clients who are uncertain whether their document falls under the 1,500-word threshold request a free word count check at the time of enquiry. If a document is on the boundary, we will confirm feasibility before accepting the same-day instruction rather than risk a missed deadline.

How long do notarised and sworn Chinese translations take?

Notarised and sworn Chinese translations take 24 to 48 hours for the certified translation element, with additional time required for the notary’s countersignature because notary attendance is scheduled separately from the translation workflow. Once the notarised document is complete, clients who also need an apostille should allow a further 2 to 5 working days for processing through the FCDO standard service — the UK Foreign, Commonwealth and Development Office is the sole issuing authority for apostilles under the Hague Convention, and their processing times are set by that office independently of our own turnaround. For time-critical submissions, we advise instructing us as early as possible and confirming whether the receiving authority accepts a scanned certified copy while the original is in transit, which saves several days in practice.

Which UK authorities accept our certified Chinese translations?

UK authorities accepting our certified Chinese translations include the Home Office, HM Courts and Tribunals Service, UK Visas and Immigration, ENIC (formerly UK NARIC), the General Register Office, the DVLA, and every Russell Group university for transcript evidence. The same certified pack is accepted for visa, ILR, and citizenship submissions.

What is the difference between certified, sworn, notarised, and apostilled Chinese translation?

Certified means signed by the translator; sworn adds a court-registered linguist’s seal; notarised adds a UK notary public’s signature; apostilled adds an FCDO apostille for international use under the Hague Convention.

Tier	What is added	Accepted by
Certified	Translator statement of accuracy + agency stamp	UK Home Office, UKVI, HMCTS, ENIC, GRO, DVLA, UK universities
Sworn	Court-registered linguist’s seal	Chinese courts, Taiwanese courts, some EU jurisdictions
Notarised	UK notary public countersignature	Chinese Embassy London, consular processing, FCDO
Apostilled	FCDO apostille on notarised translation	125 Hague Convention member states including Mainland China and Hong Kong

When do you need an apostille on a Chinese translation?

You need an apostille on a Chinese translation when the document is destined for use in Mainland China after 7 November 2023, in Hong Kong, or in any of the 125 Hague Apostille Convention member states; the FCDO issues the apostille on the notarised translation. Mainland China’s accession to the Hague Apostille Convention removed the previous consular legalisation requirement for public documents. See our Apostille and Legalisation service for the full FCDO workflow.