GVMS links every customs declaration associated with a given crossing — import, export and transit — into a single GMR number, which the haulier generates before the journey and presents when boarding the ferry or entering the tunnel. This lets the border infrastructure automatically verify that the declarations are complete, without having to stop the vehicle for a physical document check.
Contents
In brief — what you will learn
- ✓ How to prepare the process and the documents
- ✓ How the declaration and inspection work
- ✓ How to maintain compliance and settlements
How to prepare the process and the documents
Split of responsibilities between the parties
Minimum data set for the declaration
It is worth introducing a document-completeness check before the vehicle is presented. The minimum data set required for a correct declaration includes: the GMR reference number, the importer's and exporter's EORI numbers, the goods' CN code, the customs value, the country of origin, and the vehicle and driver details. Any missing element can cause the declaration to be automatically held at the border.
Exporting to the United Kingdom? Commission customs clearance in the UK.
How the declaration and inspection work
Operational stages from pre-notification to release
The most common risk points and how to limit them
The most common reasons for cargo being held are: a mismatch between the GMR number and the actual vehicle, the MRN not being linked to the GMR before entering the port, and incorrect classification of the goods in the customs system. To reduce these risks, implement a cross-check procedure between the customs and transport teams at least two hours before the planned departure.
How to maintain compliance and settlements
Record-keeping, corrections and evidence of due diligence
Documentation for every clearance should be kept for at least 5 years under customs law and the VAT Act. This covers: copies of customs declarations, evidence of the customs value, correspondence with the customs agency, and confirmations that the cargo has been released. If a declaration needs correcting after the goods have been released, a correction request must be submitted in the AIS/IMPORT or CDS system on the UK side.
Working with a customs agency and internal audit
Effective cooperation with a customs representative requires regularly reviewing the split of authority and responsibility — especially when procedures change or the scope of activity is extended. An internal audit should check every quarter that the case files are complete, that declarations were filed on time, and that the duty rates applied match the current TARIC tariff.
Summary
In summary: for 'how GVMS works for a haulier', the key is to run the process according to current official guidance, with a clear split of responsibilities and documentation of every decision. This approach reduces delays, cuts the number of corrections and makes it easier to defend the settlements during an inspection. If any requirement is unclear, check the current HMRC (GOV.UK), KAS or EC TAXUD guidance before submitting the declaration.
Legal basis and sources
- EC TAXUD: EU EORI validation
- KAS: National Revenue Administration
- Polish Ministry of Finance: Podatki.gov.pl
If the rules or system notices are updated, check the current GOV.UK or KAS guidance before submitting a declaration.
Frequently asked questions
What is GVMS and why is it mandatory for hauliers entering the United Kingdom?
GVMS (Goods Vehicle Movement Service) is an HMRC IT system that links all customs references (MRN, DUCR, EIDR) into a single movement number, the GMR. Without an active GMR, a vehicle cannot legally leave the port terminal on the UK side — the system is mandatory on all ro-ro routes, including Dover, Portsmouth and Holyhead.
Who is responsible for creating the GMR number: the haulier, the importer or the customs agency?
The GMR is created by the haulier, or by a forwarder acting on their behalf, who holds an account in the GVMS system. The customs agency is responsible for linking the MRN to the GMR, while the importer or exporter provides the goods data needed to file the declaration. This split must be agreed in writing before each shipment.
What documents does the driver need to carry to get through the port without delays?
The driver should carry: a printed or digital GMR number, a CMR transport document with the shipment reference number, an identity document and, where applicable, any additional permits (e.g. IPAFFS for products of animal origin). The port checks the GMR electronically, but not having the paper documents can extend the inspection process.
What happens if the GMR is not linked to the MRN before entering the terminal?
The vehicle is directed to a holding area, where the haulier has limited time to complete the missing link. If the MRN is not added to the GMR before the sailing's time window closes, the cargo is turned back or held for a physical inspection, generating additional storage costs and delivery delays.
How long must customs documents relating to GVMS be kept, and what should they include?
Under UK customs law (TCTA 2018), customs documents must be kept for at least 4 years, and VAT documents for 6 years. The archive should include: the GMR confirmation, the customs declaration, evidence of the customs value, and confirmation that the cargo was released. Electronic record-keeping with file-integrity verification is recommended.
Related guides
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