Split Shipment in UK Import and Export — Customs Implications of Splitting a Consignment

What is a Split Shipment?

A split shipment is a situation where goods forming the subject of a single commercial transaction (one order, one invoice) are delivered in several separate consignments, typically at different times. Each of those consignments is cleared through customs separately as a distinct declaration with its own MRN (Movement Reference Number).

Legitimate Reasons for Splitting a Shipment

There are many valid reasons why goods from a single order may arrive in the UK in several batches:

• Vehicle weight or dimension restrictions — the driver cannot carry the entire order in one trip
• Goods availability — the manufacturer fulfils the order in stages (phased production)
• Agreed delivery schedule with the buyer (partial shipments)
• Different destinations — part of the goods goes to a warehouse, part directly to the customer
• Different collection dates for logistical reasons

All of these situations are entirely lawful, provided the split arises from genuine operational reasons rather than an intent to avoid customs duty.

Anti-Splitting Rules — When HMRC Intervenes

HMRC applies anti-splitting rules in cases where it suspects that the split was deliberate in order to:

• Reduce the customs value of each shipment below £135 (the relief threshold for low-value imports under the VAT IOSS/OMP scheme)
• Avoid a formal customs entry for goods valued above £135
• Avoid duty by repeatedly filing declarations under a simplified procedure

How Does HMRC Detect Unlawful Split Shipments?

HMRC uses CDS analytical data and cross-references:

• The same importer/exporter over a short period
• The same goods (same HS code)
• Similar customs values below the threshold
• The same transport route and carrier

If the system detects a pattern, HMRC may hold subsequent shipments and consolidate them into a single declaration — charging duty on the combined value, plus a potential penalty for the underpayment.

The £135 Threshold and the Consequences of Exceeding It

In the UK, goods valued up to £135 imported from a single supplier in a single consignment are subject to a simplified VAT procedure (the seller or marketplace accounts for VAT directly). Goods above £135 require full customs clearance with payment of duty and import VAT.

How to Correctly Declare a Split Shipment

Where splitting a shipment is justified and lawful, each part must be properly documented:

• A separate invoice for each batch of goods (or a single invoice clearly marked "Partial shipment 1/3", "2/3" etc.)
• A separate packing list for each consignment
• A separate customs declaration with its own MRN for each batch
• Information in the "Additional Information" field of the declaration that this is a partial delivery
• Consistent goods description across all declarations (same HS code, same unit value)

Critical: Value in Each Declaration

Each partial customs declaration must declare the actual value of the goods in that batch — unit values cannot be understated in order to "fit" below the threshold. HMRC cross-references prices against commercial invoices and market data.

Split Shipments and UK Customs Clearance — Practical Tips

For partial deliveries to the UK it is worth ensuring:

1. Partial delivery terms are agreed in the contract of sale
2. Invoices are clearly marked: "Partial shipment X of Y"
3. Consistency is maintained: the same HS code and the same unit value across all batches
4. The reason for splitting is documented (e.g. a production schedule confirmation)
5. All documents are retained for a minimum of 4 years

Official Sources

• GOV.UK: Import licences and controls — GOV.UK / HMRC, 2026
• GOV.UK: Customs Declaration Service — GOV.UK / HMRC, 2026
• GOV.UK: Customs civil evasion penalties — GOV.UK / HMRC, 2026

Frequently Asked Questions (FAQ)

What is a split shipment in trade with the UK?

A split shipment is the division of a single commercial transaction into several separate consignments, each with its own customs declaration and MRN number. It may be lawful (logistical or production reasons) or unlawful (deliberately circumventing the £135 customs threshold). HMRC applies anti-splitting rules to suspicious patterns.

Can I split a shipment to avoid duty in the UK?

No — deliberately splitting a consignment to reduce the customs value below the £135 threshold (or any other threshold) is unlawful. HMRC may consolidate such shipments into a single declaration and charge duty on the combined value, plus a penalty of up to 100% of the unpaid duty.

What does HMRC do when it detects an unlawful split shipment?

HMRC may hold subsequent shipments, request additional documentation, consolidate shipments and charge duty on the combined value with interest, issue a C18 demand for the shortfall and impose a financial penalty. In serious cases criminal proceedings for duty evasion may be initiated.

What are the legitimate uses of a split shipment?

Legitimate reasons include: vehicle weight restrictions, phased production (partial deliveries agreed in the contract), different destinations for the goods, and delivery schedules set out in the contract. The key point is that the split must arise from genuine operational reasons rather than an intent to avoid duty.

How should partial deliveries to the UK be correctly declared?

Each batch should have a separate invoice annotated "Partial shipment X of Y", a separate packing list and a separate customs declaration with its own MRN. Unit values of the goods must be consistent across all declarations. It is advisable to retain documentation of the reason for splitting (e.g. a production schedule confirmation).