What Actually Happened After Brexit
Most people think Brexit is over. It is not. The political part wrapped up years ago, but the practical consequences are still playing out across supply chains, customs procedures, and regulatory compliance. If you are running a business that moves goods between the UK and the EU, or if you are just trying to understand why your online order from Germany now takes two extra weeks, the situation is more complicated than the headlines suggest. Let me explain how this works in reality rather than in theory. When the UK left the EU single market and customs union, a hard border effectively appeared between Great Britain and the EU. Northern Ireland has a different setup under the Windsor Framework, but that is its own separate headache. For England, Scotland, and Wales, every shipment going to the EU now requires customs declarations, rules of origin checks, and often specific certificates depending on the product type. I spent about eighteen months dealing with this directly for a mid-size electronics distributor. We were shipping components from Manchester to warehouses in Rotterdam and Hamburg every week. The first three months were a mess. Wrong HS codes on declarations, missing VAT numbers, shipments held at Dover for days because someone forgot to file an export summary declaration. We lost roughly fourteen thousand pounds in demurrage charges and delayed deliveries before we got anything close to normal.
The core issue is that customs paperwork is not optional. It is legally required and enforced by both UK and EU authorities. The UK uses the Customs Declaration Service, commonly called CDS, which replaced the old Customssystem for Electronic Data Exchange for Customs Payments, known as CEDS. The EU uses the Import Control System 2, or ICS2, for incoming shipments. Both systems need to talk to each other, and they do not always cooperate smoothly.
Understanding Rules of Origin
This is where most people get stuck. Rules of origin determine whether a product qualifies as UK-originating or EU-originating for tariff purposes. If your goods do not meet the origin criteria, they face additional tariffs when crossing into the other side. The UK-EU Trade and Cooperation Agreement, the TCA, allows zero tariffs on qualifying goods, but only if you can prove origin properly. Here is something most guides do not mention clearly enough. Origin is not just about where a product was assembled. It is about where the materials came from and whether sufficient processing happened in one territory. A simple rule of thumb is the 50 percent threshold, but that is not accurate enough for most real cases. The TCA uses product-specific rules, often called change in tariff classification rules, which vary by HS code. A phone charger and a car seat belt follow completely different origin calculations. I learned this the hard way when one of our suppliers switched to using Chinese-made circuit boards in our UK-assembled products. The circuit boards pushed the origin value below the required threshold for our particular HS code, and suddenly half our shipments to the EU were hitting a twenty point six percent tariff that nobody had anticipated. We had to restructure our supply chain within six weeks to avoid losing margin entirely. We switched to sourcing those components from a Polish supplier instead, which restored the origin status and dropped the tariffs back to zero.
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Practical Steps for Compliance
If you are dealing with this yourself, start with your commodity codes. Every product needs a correct eight-digit HS code. The UK uses TARIC codes for imports into the EU and UK customs codes for domestic use. Both systems are detailed and updated regularly. The government publishes guidance, but it is fragmented across different pages and sometimes contradictory. You will need an Economic Operators Registration and Identification number, an EORI number, for both the UK and the EU if you are trading across both sides. A UK EORI starting with GB works for exports from the UK, but if you are importing into the EU, you also need an EORI registered in an EU member state. You can apply for both through the relevant customs authority websites, though processing times vary from a few days to several weeks depending on application volume and completeness. Customs declarations require specific data fields. The basic ones include the shipper and consignee details, commodity code, origin, value, weight, and delivery terms under Incoterms. But there are many more depending on the product. Medical devices need additional certificates. Food products require health certificates signed by an official veterinarian. Cosmetics have their own documentation requirements. Tobacco and alcohol are heavily restricted. Each category has its own checklist, and missing a single field can hold up a shipment.
For the actual declaration process, you generally have three options. You can file manually through CDS if you have the internal capability, which is expensive and time-consuming for anything beyond occasional shipments. You can use a customs broker, which is the most common approach for small and medium businesses, or you can use a customs management software platform that automates the declaration process. I would recommend option two or three unless you are moving large volumes regularly.
Common Pitfalls
There are several mistakes that happen repeatedly. The first is assuming that goods shipped from Northern Ireland to the Republic of Ireland face the same restrictions as goods from Great Britain to the EU. Under the Windsor Framework, Northern Ireland follows different rules, and goods moving from Great Britain to Northern Ireland may still require additional checks depending on their destination status. This distinction is confusing and poorly communicated by official sources. The second common error is using outdated Incoterms. The 2020 version of Incoterms is the current standard, but many people are still referencing the 2010 version on their contracts. This causes disputes over who is responsible for customs clearance and associated costs. Always specify Incoterms 2020 in your contracts. A third issue is post-import VAT accounting. The basic scheme changed after Brexit. UK businesses importing from the EU now generally use postponed accounting for VAT, meaning they declare the import VAT on their VAT return rather than paying it at the border. This improves cash flow but requires your accounting system to handle it correctly. Several clients I worked with had their VAT returns rejected by HMRC because their software was not configured for postponed accounting.
Where This Approach Breaks Down
No system handles this perfectly. Even with brokers and software, shipments occasionally get held for random checks. HMRC and EU customs both perform risk-based inspections, and there is no way to guarantee your shipment will pass without scrutiny. During peak periods, like the weeks around Christmas or major trade shows, delays at ports can stretch to five or seven days purely due to congestion, regardless of paperwork quality. Another limitation is that regulatory divergence is increasing over time. The UK is slowly moving away from EU regulations in areas like pharmaceuticals, chemicals, and food standards. This means that a product compliant today may not be compliant next year, and vice versa. Keeping up requires constant monitoring of regulatory updates from both UK and EU authorities, which is resource-intensive for smaller businesses. If you are a very small business moving occasional low-value goods, the complexity may outweigh the benefit of trading across the channel. In those cases, working through a fulfillment partner based in the EU who handles all cross-border logistics internally is often the most practical solution. You sell from your EU warehouse, and the customer receives the goods as a domestic shipment.
Resources That Actually Help
The UK government website has a trade exporter tool at gov.uk/trade-exporter that walks you through requirements by product type. It is not perfect but it is more useful than most official guidance. The Chartered Institute of Procurement and Supply, or CIPS, publishes practical guides on post-Brexit trade procedures that are free to access. The European Commission also maintains a Brexit support portal with country-specific information. For software solutions, there are platforms like Customs45, ClearACloud, and Elementum that integrate with major e-commerce and ERP systems. These are not cheap, ranging from roughly five hundred to two thousand pounds per month depending on volume, but they reduce declaration errors significantly and cut the time spent on each shipment from about forty minutes to ten or fifteen minutes for routine exports. The reality is that Brexit trade compliance is no longer a one-time setup. It is an ongoing operational requirement that demands attention, updates, and sometimes significant investment. Businesses that treat it as a minor administrative task tend to learn that lesson through delayed shipments and unexpected tariff bills. Those that build proper processes from the start manage to operate relatively smoothly despite the added complexity.
