When goods are imported into the United Kingdom, the accuracy of documentation is critical. Incorrect, incomplete, or unclear paperwork can lead to customs delays, inspections, additional costs, or even penalties from HMRC. One question frequently asked by importers is:
In what language must import documents be when goods enter the UK?
This guide explains the language requirements for UK import documentation and outlines the key documents businesses must prepare for smooth customs clearance.
What Language Should UK Import Documents Be In?
For goods imported into the UK, customs documentation should be provided in English.
HM Revenue & Customs (HMRC) requires that customs declarations submitted via the Customs Declaration Service (CDS) are completed in English. Supporting documents such as commercial invoices and packing lists should also be in English or accompanied by a certified English translation if originally issued in another language.
If documentation is submitted in a foreign language and cannot be clearly understood by UK customs authorities, HMRC may request a translation before processing the declaration. This can cause delays at the border.
What Happens If the Invoice Is Not in English?
If a commercial invoice is issued in another language:
- HMRC may request an English translation.
- The customs agent may refuse to submit the declaration until translated.
- Clearance may be delayed pending clarification.
For smooth processing, it is strongly recommended that suppliers issue invoices in English when exporting to the UK.
Key Documents Required for Importing Goods into the UK
Beyond language requirements, importers must ensure all documents are complete and accurate. The most common documents include:
1️⃣ Commercial Invoice
Must show:
- Seller and buyer details
- Accurate goods description
- Commodity code (if known)
- Customs value
- Currency
- Incoterms
- Country of origin
This document forms the basis of duty and VAT calculation.
2️⃣ Packing List
Confirms:
- Number of packages
- Weights (gross and net)
- Dimensions
- Packaging type
This assists with customs inspections and logistics handling.
3️⃣ Bill of Lading / Air Waybill / CMR
Transport document confirming:
- Carrier details
- Route
- Consignment reference
4️⃣ EORI Number
The importer must hold a valid GB EORI number to submit customs declarations.
5️⃣ Preference Statement (If Applicable)
If claiming preferential duty rates under a trade agreement, the invoice must include a valid origin statement.
Incorrect origin wording can invalidate duty relief.
6️⃣ Licences or Certificates (If Required)
Certain goods require additional documentation, such as:
- Health certificates (SPS goods)
- CHED documents
- Import licences
- Safety compliance certificates
Common Documentation Errors That Cause UK Customs Delays
Even when documents are in English, delays often occur due to:
- Incorrect commodity codes
- Missing Incoterms
- Undervalued invoices
- Inconsistent origin declarations
- Missing transport references
- Goods description too vague (e.g., “parts” or “samples”)
Clear, specific descriptions reduce the risk of inspection.
Best Practice for Importers
To avoid clearance delays:
✔ Ensure all documents are in English
✔ Verify commodity codes before shipment
✔ Confirm origin statements are correct
✔ Check Incoterms match contractual terms
✔ Work with an experienced UK customs agent
Professional customs agents review documentation before submission to HMRC, reducing risk and ensuring compliance.
Do You Always Need a Customs Agent?
While businesses can submit declarations directly through CDS, many appoint a professional customs agent due to:
- Complexity of tariff classification
- VAT accounting requirements
- Risk of penalties for incorrect declarations
- Time-sensitive shipments
If you are importing goods into the UK and need assistance with documentation review or customs clearance, you can compare verified professionals in our directory of UK customs agents.
Final Thoughts
When importing goods into the United Kingdom, documentation must be clear, accurate, and preferably issued in English. Even small inconsistencies can lead to delays, additional charges, or compliance issues.
Preparing documents correctly before shipment — and working with experienced customs professionals — ensures smoother border clearance and reduces operational risk.
Customs Clearance UK: Import & Export Procedures, Documents & Costs (2026 Guide)
Customs Agents UK & Brokers | Import & Export Clearance
Frequently Asked Questions – UK Import Documents
Comments