What customs clearance actually is
Customs clearance is the process of getting imported goods formally released into UK free circulation — the point at which they can legally be stored, sold and shipped to customers. Before that happens, the goods have to be declared to HMRC, classified, valued, and any duty or import VAT accounted for.
For an ecommerce brand importing stock, clearance sits between your goods arriving at the border and them reaching your fulfilment centre. It is paperwork, not distance, that usually decides how fast that happens.
What you need to clear customs
Four things underpin almost every commercial import:
- A GB EORI number — a unique customs ID (it starts with "GB" followed by 12 digits) needed to move goods into Great Britain.
- A commodity code — the tariff classification for your product. It determines the duty rate and whether any licence is required, so getting it right matters.
- A customs declaration — submitted through HMRC's Customs Declaration Service (CDS) before the goods can be released.
- The customs value of the goods — the basis on which duty and import VAT are calculated.
Who files the declaration
You can make your own declarations using CDS-compatible software, but most brands appoint a customs representative — a customs agent, freight forwarder, courier or 3PL — to do it. Representation can be direct or indirect, and that choice affects who is liable for the customs debt, so it should be set out in writing.
Whoever files, the importer stays responsible for the accuracy of the declaration. A good fulfilment partner either handles this in-house or works with a customs broker so it is one less thing on your plate.
How long does clearance take?
Straightforward consignments with correct paperwork are typically released quickly. Where a consignment is selected for a documentary check, HMRC's National Clearance Hub aims to clear it within around 2 hours of receiving the requested documents for air freight, road freight and "short straits" roll-on/roll-off imports (marine freight has its own, slightly longer, targets).
The lesson is practical: delays almost always come from missing or incorrect paperwork, not from HMRC being slow.
What causes customs delays
The usual culprits are avoidable:
- An incorrect or missing commodity code — the single most common cause of hold-ups (and, if HMRC believes a code was chosen to avoid duty, penalties).
- Missing licences or certificates for regulated or controlled goods.
- Missing supporting documents — evidence of value, a packing list, or certificates — when a consignment is pulled for a check.
- Uncorrected declaration errors, which can leave goods on a customs hold until resolved.
How a 3PL keeps your stock moving
At our Seaham facility we handle the customs entries and declarations for goods entering and leaving, and pair that with the two things overseas sellers usually need alongside clearance: FHDDS accreditation (a legal requirement for storing goods on behalf of overseas sellers) and an HMRC bonded warehouse to defer duty and import VAT. It means one partner covers clearance, compliance and cash flow.
Frequently Asked Questions
Do I need an EORI number to import into the UK?
Yes. You need a GB EORI number (it starts with "GB" followed by 12 digits) to move goods commercially into Great Britain and to make customs declarations. You can apply for one through GOV.UK.
Can my 3PL or a customs agent clear customs for me?
Yes. You can appoint a customs representative — a customs agent, freight forwarder or 3PL — to file declarations on your behalf. You should agree in writing whether they act directly or indirectly, as that affects liability, and you remain responsible for the accuracy of the declaration.
How long does UK customs clearance take?
Consignments with correct paperwork are usually released quickly. Where a consignment is selected for a documentary check, HMRC's National Clearance Hub aims to clear air, road and short-straits freight within around two hours of receiving the requested documents.
What is the most common cause of customs delays?
An incorrect or missing commodity code, or missing supporting documents (proof of value, packing lists, licences) when a consignment is selected for a check. Accurate classification and complete paperwork are what keep goods moving.