ENS vs GMR — What's the Difference and When Do You Need Both?
The most common mistake when planning a UK border crossing: the assumption that GMR "replaces" ENS or vice versa. These are two entirely different requirements that must often be fulfilled simultaneously for the same shipment. We explain what each is, who is responsible for what, and in which order.
What is ENS (Entry Summary Declaration)?
ENS (Entry Summary Declaration) — formally known as the Safety and Security declaration — is an electronic notification of goods submitted before their arrival in Great Britain. ENS is a customs requirement arising from safety and security legislation, not directly from the import customs procedure itself.
The purpose of ENS is to allow UK customs authorities (HMRC and Border Force) to carry out a security risk assessment before goods physically cross the border. Information contained in an ENS includes: goods description and HS codes, sender and recipient details, carrier details, route, number and weight of packages, and any relevant security considerations.
Key facts about ENS:
- → System: submitted to the Safety and Security GB (S&S GB) service — not CDS
- → Who files: the carrier or their customs agent acting on their behalf
- → Timing for RoRo (accompanied and unaccompanied): at least 2 hours before arrival in Great Britain; Eurotunnel: 1 hour before arrival at the terminal
- → Timing by sea: short sea journeys — 2 hours before arrival; bulk/break bulk — 4 hours before arrival; containers — 24 hours before loading at the port of departure
- → Timing for air freight: flights under 4 hours — at the time of take-off; flights of 4 hours or more — 4 hours before arrival
- → Outcome: the ENS is risk-assessed — goods may be selected for checks on arrival (and, for sea containers, may be refused loading)
- → Agency handling cost: £25–50 (or included in the clearance fee)
What is GMR (Goods Movement Reference)?
GMR (Goods Movement Reference) is a reference number assigned to a specific shipment in GVMS (Goods Vehicle Movement Service). GVMS is a UK digital platform that manages the movement of goods vehicles across the border — it links the physical movement of the vehicle to its accompanying customs declarations.
Once a vehicle is ready to depart from the continent towards the UK, the haulier generates a GMR in GVMS — directly if registered, or via a customs agent/freight forwarder acting on their behalf. The GMR contains details of the vehicle, trailer and linked customs declarations (MRN of the import declaration, T1 transit declaration or others). The driver presents the GMR as a QR code on a tablet or mobile phone when entering the port terminal.
Key facts about GMR:
- → System: GVMS (Goods Vehicle Movement Service) — separate from CDS
- → Who generates: customs agent, freight forwarder or haulier (with direct GVMS access)
- → Who needs it: haulier/driver — must have GMR before entering a GVMS port terminal
- → Timing: before arriving at the port terminal (ideally several hours in advance)
- → GVMS ports (always): Dover, Eurotunnel, Holyhead, Fishguard, Liverpool, Heysham, Pembroke, Newhaven; some other ports — only for certain carriers
- → Outcome: access to the port terminal; no valid GMR = check-in refused by the carrier
- → Validity: GMR is tied to a specific crossing and can be updated until it is used at carrier check-in
ENS and GMR — complementary, not alternative
error The most common mistake — believing GMR "replaces" ENS
Hauliers and importers sometimes assume that because they have a GMR they do not need ENS. This is incorrect. GMR relates to vehicle movement — it informs the border system that vehicle X with declaration Y is approaching the port. ENS relates to the cargo — it informs customs what is being carried from a security perspective. These are two entirely different systems serving entirely different purposes.
| Criterion | ENS | GMR |
|---|---|---|
| Purpose | Pre-arrival cargo security and safety risk assessment | Vehicle border movement control — "vehicle passport" to the terminal |
| System | Safety and Security GB (S&S GB) | GVMS (Goods Vehicle Movement Service) |
| Who files/generates | Carrier or customs agent (on behalf of carrier) | Customs agent, freight forwarder or haulier with GVMS access |
| When | At least 2h before arrival (RoRo, short sea) / 1h (Eurotunnel) | Before arrival at the GVMS port terminal |
| Contains | Cargo data, HS codes, carrier details, route, security parameters | Vehicle and trailer details, driver data, linked customs declaration numbers (MRN) |
| Replaces the other? | NO | NO |
| Applies to air freight? | YES (required) | NO (GMR does not apply to aviation) |
Who is responsible for ENS and who for GMR?
security ENS responsibility
Formally the carrier is responsible for submitting ENS — the haulage company or ferry operator carrying the shipment. In practice, especially for road freight, this obligation is frequently taken on by the customs agent or freight forwarder acting as the carrier's authorised representative.
Who typically files ENS:
- • Customs agent (most commonly) — on behalf of the carrier or importer
- • Ferry / airline — for goods in sea containers or air freight
- • Freight forwarder — when managing the full logistics chain
- • Importer — if holding direct representative authorisation
qr_code GMR responsibility
GMR is directly linked to the haulier and driver — they physically need GMR to enter the port terminal. GMR is generated by the person with GVMS access — usually the customs agent, freight forwarder or the haulier themselves if registered in the system.
Who typically generates GMR:
- • Customs agent or freight forwarder — after assembling documents and customs declaration MRNs
- • Haulier / haulage company — if registered directly in GVMS
- • The driver does NOT generate GMR independently — they only receive the ready reference
Practical timeline: from departure to clearance
ENS filed
Customs agent submits ENS (S&S GB declaration) at least 2 hours before arrival in Great Britain (RoRo) or 1 hour before arrival at the terminal (Eurotunnel). Once validated, S&S GB issues an MRN for the ENS.
GMR generated
Customs agent or freight forwarder generates GMR in GVMS, linking the MRNs of customs declarations (import, T1 transit or others) to the vehicle details. GMR reference sent to the driver.
Arrival at terminal / loading
Driver presents GMR (QR code) at port terminal entry. The carrier (ferry operator or Eurotunnel) checks the GMR at check-in — without a valid GMR the vehicle will not be accepted for the crossing.
Clearance at UK port
On arrival in the UK, HMRC/Border Force checks the ENS risk assessment result. The import declaration in CDS receives a control code: Route 6 — no control, Route 1 — documentary check, Route 2 — physical examination. Goods are released once the import declaration is accepted.
Scenarios: when ENS, when GMR, when both?
directions_car RoRo via Dover or Eurotunnel
Polish lorry travelling via Calais or Coquelles to Dover or Folkestone. Port handled by GVMS.
anchor LoLo container via Felixstowe or Southampton
Sea container arriving at a UK port. No driver — consignee arranges inland transport after clearance.
flight Air cargo via Heathrow
Air freight from Poland to the UK via Heathrow or Manchester airport.
local_shipping Unaccompanied trailer
Trailer with cargo sails on the ferry without tractor unit or driver — consignee arranges tractor unit on the UK side.
Disclaimer: The information provided is general in nature and does not constitute legal or tax advice. ENS and GMR requirements may vary depending on the port, type of goods and current HMRC regulations. For individual cases please consult a specialist or verify with official gov.uk sources.
FAQ
Does GMR replace ENS? expand_more
No. ENS is the customs cargo safety declaration submitted before arrival. GMR is the vehicle movement reference in GVMS. Both are required for RoRo through GVMS ports — ENS covers the customs security aspect, GMR covers the physical movement of the vehicle across the border.
Who is required to submit ENS? expand_more
Formally the carrier. In practice often the customs agent acting on their behalf. For RoRo it must be filed at least 2 hours before arrival in Great Britain; for Eurotunnel — 1 hour before arrival at the terminal.
Who needs a GMR number? expand_more
The haulier/driver — they must have GMR on entering a GVMS port terminal. GMR is generated by the haulier — directly if registered in GVMS, or via a customs agent/freight forwarder. The driver usually just receives the ready reference.
When is ENS not required? expand_more
ENS is not required for, among others, postal consignments moved under UPU convention rules, letters and printed material, travellers' personal luggage, electrical energy and goods entering by pipeline. For standard commercial shipments ENS is mandatory.
What happens if a vehicle arrives at a GVMS port without GMR? expand_more
Without a valid GMR the carrier will refuse check-in and the vehicle cannot board the ferry or the Eurotunnel shuttle. The driver must obtain GMR before arriving — which can mean the vehicle must wait, potentially incurring delay costs. GMR should therefore be generated and sent to the driver before the vehicle departs.
Need ENS, GMR or full UK border handling?
easyclearance.pl handles ENS, GMR and the full range of UK border declarations. Get in touch — we will advise exactly what your shipment requires.
Helpline: +44 7404 091503