Post-Brexit EU-UK paperwork: a working reference for traders

title: "Post-Brexit EU-UK paperwork: a working reference for traders" description: "Since 1 January 2021 every UK-EU shipment is treated as a third-country export. This is the documentation that makes it work — what's needed, who issues it, and where the common failures happen." category: "commercial-importing" estimatedReadMinutes: 12 lastUpdated: "2026-06-12"

Before 1 January 2021, goods moved between the UK and the EU as a single customs territory: no customs declarations, no VAT-at-frontier, no rules-of-origin checks, no SPS (sanitary and phytosanitary) inspection on intra-EU lanes. After the end of the Brexit transition period, every shipment crosses a customs border. The UK-EU Trade and Cooperation Agreement (TCA) eliminated tariffs and quotas on goods of UK or EU origin, but it did not eliminate the customs paperwork.

This guide is a working reference for traders on both sides — not legal advice. Implementation details have changed twice (Border Operating Model 2021, Border Target Operating Model 2024); refer to the current GOV.UK or European Commission guidance for the rules in force on the date you ship.

What changed at 23:00 GMT on 31 December 2020

• UK left the EU customs union and single market.
• UK left the EU VAT area for goods (Northern Ireland remains in the EU single market for goods only).
• UK is now a third country for SPS purposes (animal/plant health rules apply).
• Customs declarations are required on both export and import for almost all UK-EU movements.
• Rules of origin under the TCA must be claimed for zero-tariff treatment; otherwise MFN rates apply.

The core export documents (UK to EU)

For a typical commercial shipment leaving GB destined for an EU member state, the exporter needs:

1. A GB EORI number (Economic Operator Registration and Identification). Free to register with HMRC. Without an EORI you cannot file a UK export declaration.
2. Commercial invoice with: full consignor/consignee details, EORI of both parties, full description of goods (not just HS codes), commodity codes, country of origin, gross/net weight, statistical value, Incoterms (e.g. DDP, DAP, EXW), and an origin declaration if claiming preferential treatment under the TCA.
3. Packing list matching the invoice line by line, with shipping marks.
4. UK Export Declaration filed via the Customs Declaration Service (CDS). Most exporters use a forwarder or broker; high-volume exporters file directly via CDS Trader Tool or via software providers (CHIEF was retired in 2024).
5. Statement on Origin if claiming TCA preferential rates. The wording is prescribed in TCA Article ORIG.18: "The exporter of the products covered by this document declares that, except where otherwise clearly indicated, these products are of UK preferential origin." A REX-registered exporter (£10,000 single-consignment threshold) does not need to register; above the threshold a separate Registered Exporter number must be quoted.
6. Transport documents (CMR, AWB, bill of lading) with the customs reference number (MRN) issued by CDS at declaration submission.
7. Additional documents for controlled goods: CITES permits, drug-precursor licences, dual-use export licences, art-market verification, etc.

The core import documents (UK exporter to EU importer)

The EU importer needs:

1. An EU EORI number issued by any EU member state customs authority. EORIs are valid across all 27 member states.
2. Import declaration filed in the EU member state of arrival via that state's national customs system (e.g. DELTA in Belgium, GIRA in France, ATLAS in Germany, AIDA in Italy).
3. Statement on Origin from the UK exporter (item 5 above), or an "importer's knowledge" declaration if the EU importer has sufficient documentary evidence themselves.
4. Payment of EU VAT at the destination member state's rate. VAT is paid at the customs entry unless the importer uses postponed VAT accounting (most EU member states allow this).
5. Tariff payment (zero under TCA if origin claim is valid, otherwise EU CN8 MFN rate).
6. Excise documentation for alcohol, tobacco, energy products (EU EMCS / SAAD).
7. Additional documents for SPS-controlled goods: Common Health Entry Document (CHED) filed in advance via TRACES NT.

SPS (animal and plant products): the moving target

The hardest part of post-Brexit paperwork has been the phased implementation of full SPS controls. The UK's Border Target Operating Model (BTOM) introduced staged controls in 2024:

• 31 January 2024: medium- and high-risk animal products require Export Health Certificates (EHCs) issued by an Official Veterinarian in the EU origin country and BIP (Border Control Post) pre-notification via IPAFFS.
• 30 April 2024: medium- and high-risk plant products require Phytosanitary Certificates and IPAFFS pre-notification.
• 31 October 2024: import controls extended to GB-NI movements via the Windsor Framework Green Lane / Red Lane system.

UK-origin foods entering the EU have required EU SPS controls since 1 January 2021, including CHEDs and pre-notification via TRACES NT.

Common failures in 2024-2026: incorrect SPS commodity codes (CN vs HMRC tariff differences), missing or rejected EHCs (issuing veterinarians not authorised or signature problems), TRACES NT notifications submitted too late, and goods routed via a non-approved BCP.

Rules of origin under the TCA

The TCA permits full bilateral cumulation between UK and EU origin: inputs from either party count as originating for goods produced in the other. This is more generous than most third-country FTAs and means that EU-origin inputs into a UK manufacturer's product remain "preferential" when the finished product is exported back to the EU.

What does NOT count as originating:

• Inputs from countries outside the UK and EU (China, Vietnam, US, etc.) unless they meet a Product-Specific Rule (PSR) in TCA Annex ORIG-2 — typically a CTC or RVC threshold.
• Simple "minimal operations" (relabelling, repackaging, simple assembly) carried out in the UK or EU on otherwise non-originating goods.
• Goods stored in third-country warehouses between manufacture and export to the destination party (the "no-manipulation" rule under TCA Article ORIG.16).

For high-volume traders, registering as an Approved Exporter (UK) or a REX-registered exporter (EU) reduces declaration burden but adds an audit obligation: the registered exporter must keep production records for five years and must respond to verification requests from the importing country's customs administration.

Northern Ireland: the Windsor Framework

NI remains in the EU single market for goods. Movements between Great Britain and Northern Ireland are now classified under the Windsor Framework:

• Green Lane: goods staying in NI use the UK Internal Market Scheme (UKIMS). UKIMS-authorised movers can use simplified declarations with no full customs entry. UKIMS is closed to high-risk goods (live animals, certain plant material, controlled drugs).
• Red Lane: goods at risk of moving onward into the EU single market require a full customs declaration and EU tariff payment, with SPS controls applied as if to a third-country shipment.

The framework went into full operation in late 2024 with phased changes to retail/wholesale food movements ("retail movement scheme").

Common mistakes traders make

• Filing the declaration in the wrong member state. The declaration must be filed in the EU member state of arrival, not the eventual delivery state. Goods landed in Rotterdam destined for Italy must be filed at Dutch customs.
• Missing the 7-day pre-arrival window for SPS pre-notification. Pre-notification via TRACES NT or IPAFFS must be submitted at least 24 hours before arrival (for most products); failure to pre-notify results in BCP refusal.
• Wrong commodity codes. EU CN8 and UK Global Tariff are aligned at the 6-digit HS level but diverge at the 8th and 10th digit. A code that's correct for UK export will not necessarily clear EU import.
• Forgetting the origin declaration. Without the TCA statement, goods that would qualify for zero duty pay MFN rate. The error is recoverable post-entry within the limitation period but requires repayment documentation.
• Mixing EU and UK addresses on the consignee. Customs systems compare consignee EORI with consignee address; mismatched data triggers manual review and can hold a shipment 24-72 hours.

The economic effect

Post-Brexit trade with the EU continues at substantial volume. The Office for National Statistics reports that the steady-state UK-EU goods trade has stabilised, with declarations infrastructure absorbing the increased paperwork burden. For traders, the practical effect is a 1-2 day additional transit time on average and 1-3% additional administrative cost per shipment, both of which the market has substantially absorbed.

For low-volume traders, the per-shipment customs broker fee (typically GBP 30-50 each way) means that EU-UK shipments below GBP 500-1,000 in commercial value often no longer make economic sense as discrete shipments and are consolidated into larger groupage loads.