UK Customs Clearance: How Declarations, Duty and Releases Actually Work
UK customs clearance requires an import declaration lodged in HMRC's Customs Declaration Service (CDS), a GB EORI number, the correct 10-digit commodity code, and payment or deferral of duty and import VAT. Most shipments clear within hours when the paperwork is right; errors trigger route 1/2 checks that hold cargo at port. Carrgo lodges declarations before arrival so goods release on discharge.
What Carrgo handles
- Route and freight mode planning for UK importers and exporters.
- Customs readiness, documentation checks and port release support.
- Sea, air, road, rail, container and door-to-door freight options.
- Clear quote handling and monitored shipment handover.
Freight option comparison
| Option | Best for |
|---|---|
| Sea freight | Lower-cost container and bulk shipments. |
| Air freight | Urgent cargo and time-critical shipments. |
| Road freight | European pallets, groupage and full loads. |
| Customs support | Documentation, duty checks and release planning. |
What happens next?
- Send Carrgo your shipment details.
- Carrgo reviews route, freight mode and customs requirements.
- You receive clear freight quote guidance and next steps.
- We monitor the shipment and keep you updated throughout.
Freight forwarding FAQs
What happens if my customs declaration is wrong?
HMRC either queries the entry (the goods wait at port while you respond, accruing storage from day 3-5) or, for repeated errors, raises a civil penalty. Undervaluation and wrong commodity codes are the two triggers we see most. A pre-lodged, correctly classified entry clears on arrival with no storage at all.
Do I need a customs agent or can I declare myself?
You can self-declare through CDS, but you need software access, a duty deferment or payment method, and confidence in classification and valuation rules. Most importers use a broker because one wrong code either overpays duty on every shipment or builds up an underpayment HMRC can claim back over 3 years with interest.
What is postponed VAT accounting and should I use it?
PVA lets VAT-registered importers declare import VAT on their VAT return instead of paying it at the border - no cash outlay at clearance. There is no application; it is selected on the customs entry. Almost every VAT-registered importer should use it, and we set it as default unless told otherwise.
How fast can a container clear UK customs?
With a pre-lodged entry, clearance is typically granted before or within hours of vessel arrival, and the container releases as soon as the terminal processes it. Without pre-lodgement, add 1-2 days. If HMRC selects the entry for documentary or physical checks, expect 2-7 days - which is why accurate first-time declarations matter.