Goods Held at the UK Border — a 15-Minute Checklist for Hauliers and Freight Forwarders

When a shipment is held before a port or after crossing the border, the first few minutes decide whether the situation gets back on track quickly or starts generating costs. In practice, it's not just about "customs clearance" — it's about quickly working out which element is actually blocking the movement.

This checklist is written for hauliers, freight forwarders and trading companies handling UK–Poland traffic. If you need operational support straight away, see also our support for imports from the UK to Poland and get in touch with us as soon as you've gathered the basic data.

The 15-minute checklist: what to check first

1. The message or reason for the hold
   Write down the exact message from the system, the terminal or the driver. Don't rely on a summary from memory.
2. Vehicle data
   Check the transport ID in the GMR: the vehicle registration number (accompanied movement) or the trailer or container number (unaccompanied), and compare it with the data used in the declarations.
3. Document references
   Check the MRN, T1, GMR, ENS and any other numbers linked to the movement.
4. Commercial document
   Verify the invoice, the description of the goods, the quantities, the sender and the consignee.
5. Port or inspection location
   Enter the GMR number in HMRC's service that shows whether an inspection is needed, and establish whether the movement must report for inspection and where.

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The most common causes of a hold-up

• an error in the vehicle or trailer data,
• a GMR that hasn't been created correctly,
• a missing or unconfirmed ENS,
• inconsistency between the commercial and customs documents,
• a requirement to report for a check or inspection.

If the problem is with the GMR or GVMS

Goods cannot travel on routes that use GVMS without a GMR. Check that the GMR was created against the correct references — a reference must be entered for all goods in the vehicle, trailer or container — and that it matches the current transport data. A discrepancy can stop the movement going any further. These articles will help: a GMR error before the port, how to check GMR status in GVMS and the difference between GMR and ENS. Get a full set of data ready before you contact an agency.

If an inspection notice comes up

According to HMRC, an "inspection needed" result means you must report to the location indicated: the border location or an inland border facility (IBF). When entering the UK, the check is made towards the end of the crossing, about 10 minutes before you reach the arrival border location. We describe this in more detail in the article on reporting for inspection after arriving in Great Britain; general rules are in our guide on what to do if customs control holds your goods. Also establish which documents must be shown. At this stage, what matters is not just that a document exists, but whether it can quickly be matched to the current status of the movement.

What to send to a customs agency so you don't lose time

• a photo or screenshot of the error message,
• the vehicle and trailer registration numbers,
• the MRN, GMR, T1 and ENS information,
• the commercial invoice or packing list,
• a short note on where the vehicle is and what the deadline is.

What not to do

• don't correct data "on the fly" without first working out which element is actually the source of the problem,
• don't send the driver onward just because "it might get through",
• don't assume that the T1 document or the MRN alone resolves the security and port-movement issue,
• don't include ENS data in a transit declaration in the UK — since 1 June 2026 (NCTS Phase 6) such declarations are rejected, and the ENS is filed separately with HMRC (details on NCTS Phase 6; the consequences of a missing ENS are covered in what happens if you don't file an ENS).

Summary

The faster you gather the correct data, the faster it can be established whether the problem relates to a document, movement through GVMS, the ENS requirement or an on-site inspection. If your shipment is already held up, contact us straight away and send whatever you have. It's better to start with an incomplete package than to wait until the cost of the hold-up grows even larger.

Official sources

• GOV.UK: Goods Vehicle Movement Service
• GOV.UK: Get a goods movement reference
• GOV.UK: Making an entry summary declaration
• GOV.UK: Check if you need to report for an inspection in Great Britain after arriving from the EU
• GOV.UK: Civil penalties for contraventions of customs law (Customs Notice 301)

Extra support for urgent cases

If the issue is already live and you need a wider point of reference, also see: Goods stuck at the border — how to sort out the situation.

Frequently asked questions