Customs clearance is the gateway for all imported goods entering the UK. Simply put, it’s the process where HM Revenue & Customs (HMRC) gives your shipment the green light to enter the country. However, the compliance process can be complex and time consuming, and one missing document or a single incorrect code can lead to significant delays, hefty fines and the nightmare scenario of goods being rejected entirely.
The good news is, with the support of the highly experienced specialist customs clearance agents at CLA UK, your shipments can move smoothly through every stage of the process, giving you the confidence and freedom to get on with running your business.
What is customs clearance in the UK?
Customs clearance is the mandatory process of declaring goods to HMRC when they enter the UK. This crucial step ensures the correct duties and VAT are paid and verifies that goods are legal and safe to enter the country.
Traditionally when goods arrive at a UK port or airport, they are temporarily stored until customs officers review the declaration. Officers check that the paperwork matches the cargo, the correct taxes have been calculated, and any required safety checks have been completed. In more recent years on certain sailing routes such as Calis to dover or the Eurotunnel coming into Folkestone a more automated system that allows pre-lodged customs declarations to automatically clear customs upon arrival in the UK. These different types and methods of customs declarations can be difficult to understand.
As customs clearance agents, this is where we play a vital role, specialising in the complex language of tariffs and trade regulations. Acting as translators for HMRC requirements, we help you avoid misclassification and costly errors. For instance, incorrectly classifying a shipment under the wrong commodity code could lead to the unwanted outcome of overpaid or underpaid duties and the resulting potential penalties.
Essential documents required for UK customs clearance
Preparation and accuracy in documentation are vital to a smooth import process. Key documents required for customs clearance in the UK include the following:
Commercial invoice
At the core of a customs declaration, the commercial invoice enables HMRC to determine the value of goods and the applicable taxes.
Mandatory fields to include:
- Value: The true transaction value of the goods.
- HS Codes (Commodity Codes): The standardised identification for each item.
- Description: A clear, plain English description of the goods.
- Incoterms: Define responsibility for shipping costs and insurance (e.g., EXW, FOB, DAP).
Expert insight: We avoid vague descriptions such as ‘samples’ or ‘parts’. Instead, we use precise language such as ‘steel ball bearings for automotive engines’.
Packing list
The packing list describes the physical details of the shipment and is distinct from the invoice, focusing on logistical aspects.
Required information:
- Quantity: Number of units.
- Weight: Gross and net weights.
- Dimensions: Box or pallet sizes.
- Package type: Cartons, crates, pallets etc.
- Origin: Country of origin of each HS Code
This document enables customs officers to verify the shipment efficiently and easily locate items during inspections.
Bill of Lading / Airway Bill / CMR
Transport documents serve as both a receipt and contract of carriage.
- Bill of Lading (B/L): Used for sea freight, confirming goods are received on board the vessel.
- Airway Bill (AWB): Used for air freight.
- CMR: Used for European road freight.
For example, port authorities require the Bill of Lading before releasing containers to the haulier. This document confirms the right to claim the goods.
EORI number
An EORI (Economic Operators Registration and Identification) number is essential for businesses importing into the UK. It links your business to the shipments within the customs system.
Why it is needed: Without a UK EORI number starting with ‘GB’, goods will be held at the border.
Obtaining an EORI number:
- Go to the GOV.UK website.
- Search for ‘Get an EORI number’.
- Enter company details (the process usually takes 5–10 minutes).
- Receive a number instantly or within a few days.
Customs declaration (C88 / CDS Submission)
The customs declaration is the official submission to HMRC, now made digitally via the Customs Declaration Service (CDS). This collects all the required details in a format HMRC systems can recognise.
Your dedicated agent at CLA UK will ensure every field is double checked, including currency codes and the country of origin to avoid frustrating and unnecessary delays.
Certificates of Origin and Proof of Origin
Certificate of Origin or Proof of Origin is necessary to benefit from reduced or zero duty, particularly under trade agreements such as the UK-EU Trade and Cooperation Agreement. The requirements for the types of proof vary depending on the trade deal. For example, goods coming from the EU for which you would like to claim the duty UK-EU (Brexit) trade deal require a declaration of origin statement on the invoice from the exporter containing the exporters registration number (REX) as in this example:
“The exporter of these products covered by this document (insert REX number) declares that, unless otherwise clearly stated, these goods are of (insert EU country: DE/FR/PL etc) preferential origin.”
Import licences and permits
Controlled goods require specific licences to be imported into the UK. Examples include:
- Plant and animal products (Phytosanitary certificates / Health certificates)
- Chemicals
- Medicines
- Controlled items such as firearms or dual-use goods
Official UK government guidance details which products require permits, and again, this is something we can facilitate for your business.
Import VAT certificate (C79)
The C79 certificate is a monthly statement from HMRC showing Import VAT paid. It is essential for claiming VAT back on returns, and it can be found on your CDS financial dashboard.
Additional / sector-specific certificates
Industry-specific documents may also be needed, and we can advise you on this:
- Veterinary certificates for live animals or animal products.
- Phytosanitary certificates for plants and produce.
- Dangerous goods notes for hazardous materials.
Common mistakes we help you avoid
Frequent issues in customs clearance can hold up your shipment or incur extra costs. With our support, you can avoid these pitfalls:
- Incomplete invoices: Omitting Incoterms or product details.
- Incorrect HS Codes: Entering mismatched codes.
- Missing Licences: Not verifying requirements for restricted goods in advance.
How customs clearance agents can help
As well as being complex, the process of customs clearance is ever-changing and requires technical accuracy and up-to-date compliance with UK regulations. CLA UK’s customs clearance agents handle your document preparation, declaration submissions via CDS and liaison with HMRC to resolve any queries efficiently.
Benefits for your business:
- Time savings: Staff focus on the business while CLA UK manages the paperwork.
- Reduced error risks: Errors are caught and corrected before submission.
- Improved compliance: Our expertise safeguards against fines and rejected shipments.
Step-by-step process for customs clearance in the UK
A standard import process follows these steps:
- Prepare documents: Collect all core documents before goods arrive.
- Submit declaration: Agent submits the import declaration to CDS.
- Pay duties: Either by your own deferment account or the agents.
- VAT: most UK companies can use Postponed VAT accounting (PVA).
- Risk assessment: HMRC conducts safety or paperwork checks if necessary.
- Release of goods: Once cleared, goods can leave the port.
UK Customs Clearance Checklist
This checklist contains the essential components to prepare for each shipment:
- Commercial invoice (with Incoterms & HS Codes)
- Packing list
- Bill of Lading / Airway Bill / CMR
- EORI number (starts with GB)
- Proof of Origin (if claiming reduced duty / duty free)
- Import licences (if applicable)
Ensure your imports clear UK customs smoothly
Take the stress out of shipping. For expert support throughout the customs process, contact CLA UK’s customs clearance agents. Call us on +44 (0) 116 279 0930 or email sales@cla-uk.com to get started.
FAQs
What is the most important document for customs clearance in the UK?
The Commercial Invoice is the most critical document. It specifies the value, HS Codes, Incoterms and origin which are essential for calculating Duty and VAT.
Do I need an EORI to clear goods in the UK?
Yes. All businesses importing or exporting goods in the UK need an EORI number that starts with ‘GB’. Without it, customs declarations cannot be submitted, and goods will be held at the border.
Can I submit customs declarations myself?
While possible, submission requires specialist software and detailed knowledge of UK customs regulations. Most businesses prefer to use an agent such as CLA UK to mitigate risks and avoid costly errors.
How long does customs clearance take in the UK?
When documents are accurate and no inspection is required, clearance may take just a few hours. If documents are incomplete or an inspection is triggered, the process can extend by several days.