Let's be honest: for most UK business owners, the words "customs clearance" conjure images of paperwork mountains, delays at Felixstowe, and unexpected bills arriving weeks after your shipment lands. It doesn't have to be that way. Customs clearance is a process — and like any process, once you understand it, you can plan for it, control it, and stop being surprised by it.
This guide is for UK business owners who are importing goods from China, Vietnam, or elsewhere in Asia and want to properly understand what happens when their shipment hits British shores. Whether you're importing for the first time, you've had a costly clearance delay, or you're simply tired of relying on vague assurances from your freight forwarder — this is the guide you need.
At Epic Sourcing, we help UK brands source products from China and Vietnam every day. Customs clearance is a topic that comes up on nearly every client call — so we've written this to give you the complete picture, in plain English.
UK customs clearance is the official process by which imported goods are declared to HMRC, assessed for applicable duties and VAT, and formally authorised to enter the UK market. It is a legal requirement for all commercial imports, and is managed through the UK Government's Customs Declaration Service (CDS).
UK customs clearance isn't a formality. It's a legal gate between your supplier's factory and your UK warehouse. Get it right and your goods arrive on time, your costs are predictable, and HMRC has no reason to come knocking. Get it wrong and you're looking at held shipments, storage charges at port, re-submission fees, potential penalties — and, in serious cases, goods being seized or returned.
The UK processes over £1 trillion in trade annually. Since leaving the EU Customs Union in January 2021, the UK operates a fully independent customs system with its own tariff schedules, declaration infrastructure, and compliance obligations. That means UK importers can no longer rely on EU-era processes or equivalences — HMRC runs the show, and the rules are distinctly British.
For businesses sourcing from China (UK's second-largest import source, at approximately £71 billion annually in Apr 2024–Mar 2025) and from Vietnam (bilateral trade reaching approximately £9.6 billion in 2024 under the UKVFTA), understanding UK customs clearance is not optional. It's the difference between a smooth supply chain and an expensive education.
Storage fees at UK ports (Felixstowe, Southampton, London Gateway) typically start at £30–£75 per container per day after the free storage period ends. A one-week delay on a held shipment can easily add £500–£1,000 in avoidable costs — before you account for the knock-on effects on your customers and stock levels.
An Economic Operators Registration and Identification (EORI) number is your UK business's unique ID for customs purposes. If you are importing commercial goods into the UK, you are legally required to have one. This is non-negotiable.
UK EORI numbers start with "GB" followed by your VAT number (if VAT-registered) plus three digits, or an allocated number if you're not VAT-registered. For example: GB123456789000.
Applying is straightforward and free. You apply via HMRC's online service at gov.uk. If you're VAT-registered, you'll typically receive your EORI within 5–10 working days. If you're not VAT-registered, it can take slightly longer as HMRC needs to verify your business details.
| EORI Type | Who Needs It | Format | How to Apply |
|---|---|---|---|
| GB EORI | Any UK business importing goods | GB + VAT number + 000 | Apply via gov.uk HMRC portal (free) |
| XI EORI | Businesses moving goods between GB and Northern Ireland | XI + 12 digits | Applied automatically with GB EORI in most cases |
Apply for your EORI number as soon as you decide you're going to import commercially — don't wait until your goods are on a ship. You'll need it for your import declaration, and scrambling to get one while a container sits at Felixstowe is both stressful and expensive.
HMRC replaced the old CHIEF system with the Customs Declaration Service (CDS) in November 2023. CDS is now the UK's single customs declaration platform — it's what all import and export declarations go through.
As an importer, you don't need to use CDS directly unless you're submitting your own declarations. Most UK importers rely on a customs broker or freight forwarder to handle declarations on their behalf. However, you need to understand what CDS requires, because the accuracy of your declarations is ultimately your legal responsibility.
Should you handle customs declarations yourself, use a dedicated customs broker, or let your freight forwarder handle it? The honest answer depends on your volume, product complexity, and how much time you want to spend learning customs procedures.
| Factor | DIY (Self-Declare) | Customs Broker | Freight Forwarder |
|---|---|---|---|
| Cost | Lowest (software ~£100–£400/mo) | £50–£150 per declaration | Often included or £40–£100 extra |
| Expertise | Yours — must learn CDS | High — dedicated specialist | Variable — check first |
| Error risk | High for beginners | Low | Medium (varies by forwarder) |
| Legal liability | Fully yours | Shared — broker can be jointly liable | Shared — check their T&Cs |
| Best for | High volume, simple goods, experienced importers | Complex goods, regulated categories | SMEs wanting simplicity, standard goods |
Look for HMRC-authorised agents who are members of the British International Freight Association (BIFA) or the Institute of Export and International Trade (IOE&IT). Ask: "Are you set up on CDS?" and "Do you handle regular shipments from China?" Not all customs brokers have equal experience with Asian supply chains.
Here's what actually happens from the moment your shipment leaves China or Vietnam to when it clears UK customs. Understanding this timeline helps you plan stock and cashflow — and know exactly what to chase and when.
Your Chinese or Vietnamese supplier prepares the commercial invoice, packing list, and books the bill of lading. The invoice must state the correct value, description, country of origin, and HS codes. Errors here flow through to your customs declaration — so brief your supplier carefully on exactly what you need.
For sea freight (25–35 days from China, 30–35 days from Vietnam to Felixstowe or Southampton), your customs broker can prepare your import declaration before the ship arrives. Pre-entry means clearance can happen the moment the vessel berths, rather than waiting in a queue at port.
The shipping line notifies your freight forwarder that the vessel has arrived. The carrier issues an Arrival Notice and releases the Bill of Lading once documents are processed. You'll need to settle any outstanding freight charges before the container is released from the terminal.
Your customs broker submits the full declaration via CDS. In the vast majority of cases, clearance is instant or takes a few hours (Route 1 or Route 6). Around 3–5% of shipments are flagged for documentary checks (Route 2) or physical examination (Route 3), which can add 1–5 days.
Once HMRC accepts the declaration, duty and import VAT become payable. Most businesses use a Duty Deferment Account (DDA) to pay HMRC monthly rather than per shipment. Use Postponed VAT Accounting (PVA) to defer import VAT to your VAT return — both are highly recommended for regular importers.
Once clearance is granted and the shipping line releases the container, your goods can be collected from the port terminal or delivered directly to your warehouse via haulage. Most containers clear UK customs within 24–48 hours of vessel arrival when all documents are in order.
| Document | Prepared By | Must Include | Common Errors |
|---|---|---|---|
| Commercial Invoice | Supplier | Full goods description, quantity, unit price, total value, country of origin, HS codes, Incoterms, addresses | Vague descriptions, undervalued prices, wrong origin |
| Packing List | Supplier | Item-by-item breakdown, carton counts, gross/net weights, dimensions | Discrepancies with invoice quantities |
| Bill of Lading / Air Waybill | Carrier / forwarder | Shipper, consignee, vessel details, container number, cargo description | Wrong consignee name, missing notify party |
| Certificate of Origin | Supplier / Chamber of Commerce | Country of manufacture, goods description; for UKVFTA must be EUR1 or REX-certified | Missing when UKVFTA preference claimed, wrong format |
| Import Licence / Permits | UK Importer | Required for: food, plants, animals, chemicals, firearms, medicines, certain textiles | Not knowing a licence is required; applying too late |
| UKCA / Safety Declaration | UK Importer (legal responsibility) | Declaration of conformity with UK product safety regulations; technical file held by importer | CE marking assumed sufficient post-Brexit — it is not |
Post-Brexit, many products that previously required CE marking now require UKCA (UK Conformity Assessed) marking for sale in Great Britain. This applies to electronics, toys, machinery, PPE, medical devices, and construction products. The importer — that's you — is legally responsible for ensuring goods meet UK product safety requirements. Your Chinese supplier cannot do this for you.
The tariff charged based on your commodity code under the UK Global Tariff. Rates vary significantly — from 0% on many industrial inputs to 12% on footwear or clothing. Duty is calculated as a percentage of the CIF customs value (cost of goods + insurance + freight to UK port).
Import VAT at 20% is charged on the customs value plus customs duty. VAT-registered businesses reclaim this on their VAT return — it's a cashflow consideration rather than a permanent cost. Non-VAT-registered businesses pay it and cannot reclaim it.
Port handling fees, terminal handling charges, haulage, customs broker fees, storage (if clearance is delayed), and potentially anti-dumping duties on certain Chinese goods (notably steel, solar panels, ceramic tiles). Factor all of these into your landed cost calculations from day one.
| Item | Amount | Notes |
|---|---|---|
| Goods value (FOB) | £50,000 | Factory price |
| Sea freight + insurance | £2,800 | China to Felixstowe, 20ft container |
| Customs value (CIF) | £52,800 | Base for duty calculation |
| Import duty (12% clothing) | £6,336 | UK Global Tariff Chapter 61/62 |
| Import VAT (20%) | £11,827 | On CIF + duty; reclaimable if VAT-registered |
| Customs broker fees | £350 | Typical for one FCL declaration |
| Total landed cost (ex-VAT) | £59,486 | Effectively 19% above FOB value |
If you're sourcing from Vietnam, the UK-Vietnam Free Trade Agreement (UKVFTA) can significantly reduce or eliminate your duty bill. Under the UKVFTA, 65% of UK tariff lines on Vietnamese goods were eliminated immediately, with over 99% due to be eliminated as the agreement phases in. For clothing, UKVFTA can reduce the standard 12% duty to 0% — but only if your goods genuinely originate in Vietnam and you have a valid EUR1 or REX certificate.
| Product | China Duty | UKVFTA Rate | Saving on £100k |
|---|---|---|---|
| Clothing & apparel | 12% | 0% (phased) | Up to £12,000 |
| Footwear | 8–17% | 0% (phased) | Up to £17,000 |
| Furniture | 0–6.5% | 0% | Up to £6,500 |
| Plastic products | 3.5–6.5% | 0% | Up to £6,500 |
Your Chinese supplier may suggest an HS code, and some will deliberately suggest a code with a lower duty rate. This is your legal liability — HMRC can raise demands for underpaid duty going back years. Always verify the HS code yourself using the UK Trade Tariff or with your customs broker.
Some suppliers offer to show a lower value on the commercial invoice. This is customs fraud — a criminal offence in the UK. HMRC has sophisticated risk profiling that identifies undervalued shipments. Penalties include seizure of goods, fines, and in serious cases, prosecution.
Certain product categories require licences or permits before arrival: food products, animal-derived materials, chemicals covered by UK REACH, certain textiles, and medical devices. Discovering a licence requirement when your container is at port is an expensive way to learn this lesson.
Your goods might ship from a Chinese port but originate elsewhere. Declaring the wrong country of origin affects which duty rate applies and can invalidate trade agreement preferences. This matters particularly for goods transiting through Hong Kong or assembled from components from multiple countries.
UK VAT-registered businesses can use Postponed VAT Accounting (PVA) to account for import VAT on their VAT return rather than paying upfront. This is a significant cashflow advantage. Ask your customs broker to apply PVA on your declarations by entering "G" in the VAT method box.
Since 1 January 2021, Great Britain requires UKCA marking for most regulated products. CE marking transitional arrangements have been progressively phased out. UK importers are responsible for correct conformity markings — relying on your supplier's CE documentation is not sufficient.
Epic Sourcing works with UK businesses to manage the full importing process — including supplier coordination, quality control, and guiding you through customs and logistics. Book a free 20-minute consultation.
Book Your Free ConsultationOne of the most significant changes coming to UK customs is the abolition of the £135 Low-Value Import (LVI) threshold. Currently, goods with a customs value under £135 are exempt from import duty (though import VAT still applies). From 2028, this exemption will end — all commercial imports will attract duty regardless of value.
This has major implications for UK businesses importing small-value goods from China — particularly those using direct-to-consumer fulfilment, dropshipping, or frequent small shipments. It also affects businesses sourcing samples or test orders at low values.
If your current import model relies on the £135 exemption, you need to model the cost impact and potentially restructure your supply chain before 2028. Consolidating orders into fewer, larger shipments and using a UK 3PL warehouse will typically be more cost-effective under the new rules.
At Epic Sourcing, we work with UK businesses at every stage of the sourcing and importing process — from finding and vetting factories in China and Vietnam, through quality control and production management, to coordinating shipping and helping you understand what to expect at UK customs.
We're not a customs broker — but we work closely with trusted UK freight forwarders and customs specialists, and we make sure everything upstream (supplier documents, correct invoicing, HS code guidance, origin certificates) is in order before it becomes your problem at the border. Our China-based team sees what happens on the ground in factories, not just what gets declared on paper.
For UK businesses wanting to import existing products under their own brand. We find verified suppliers, manage samples and production, and coordinate shipping — with supplier document checks built in to every project.
Learn more →For brands wanting custom-manufactured products. We manage the full development process, including ensuring your supplier provides all correct documentation for UK customs clearance and product compliance.
Learn more →Full-service product development, sourcing, and supply chain management for established UK brands. Includes dedicated logistics coordination, full landed cost modelling, and compliance support.
Learn more →Concerned about your existing supplier's legitimacy? Our China-based team conducts factory audits and verification checks — ensuring you're not importing from a trading company posing as a manufacturer, which commonly causes documentation issues at UK customs.
Learn more →For the vast majority of standard commercial imports, customs clearance happens within 2–24 hours of the import declaration being submitted via CDS. When all your documents are correct and your goods aren't flagged for examination, clearance can be effectively instantaneous. HMRC selects a percentage of shipments for document checks (Route 2, adding 1–3 days) or physical examination (Route 3, adding 2–5 days). Building pre-lodgement declarations into your process ensures clearance happens the moment your vessel berths at Felixstowe or Southampton rather than waiting in a queue.
No — UK law does not require you to use a customs broker. You can submit import declarations yourself via CDS if you have the relevant software and training. However, the vast majority of UK SMEs importing from China and Vietnam use a customs broker or freight forwarder with in-house customs capability. Given that errors in customs declarations are your legal liability, and the cost of professional clearance (typically £50–£150 per declaration) is small relative to the value of most commercial shipments, using a professional is strongly advisable.
HMRC's risk profiling flags a percentage of shipments for additional checks. Route 2 means your documentation will be reviewed by an HMRC officer — typically adding 1–3 days. Route 3 means physical examination at port — adding 2–5 days and usually incurring examination fees from the terminal. If you're regularly flagged, it may indicate an issue with your HS codes, declared values, or supplier documentation. First-time importers and new supplier relationships are more commonly flagged during HMRC's initial risk assessment period.
Yes, if you're VAT-registered in the UK, you can reclaim import VAT as input tax on your VAT return. The most cashflow-friendly approach is Postponed VAT Accounting (PVA) — you account for import VAT on your VAT return rather than paying it at the border. Make sure your customs broker applies PVA on your declarations (enter "G" in the VAT method box). You'll need your Monthly Postponed Import VAT Statement from HMRC's online services to complete your VAT return. Non-VAT-registered businesses cannot reclaim import VAT.
A Duty Deferment Account (DDA) allows you to defer payment of customs duties and import VAT to the 15th of the month following import, rather than paying per shipment. For businesses importing regularly, this is a significant cashflow benefit. To open a DDA, apply through HMRC and provide a bank guarantee or use a customs comprehensive guarantee. Your customs broker can also hold a DDA and pass the deferment benefit to you. If you're importing more than a few shipments per year, a DDA is almost always worth setting up.
Understanding UK customs clearance is the first step. Getting it consistently right — with verified suppliers, correct documentation, and a UK-side team who knows the process — is what Epic Sourcing delivers for our clients every day.
Whether you're just starting out or scaling an established importing operation, book a free consultation and let's talk through your supply chain.
Epic Supply Chains UK Ltd · 71-75 Shelton St, London WC2H 9JQ · hello@epicsourcing.co.uk
