How Letters of Credit Protect UK Importers from Supplier Risk
Alex Kyriakides
Partnerships and Trade Manager · May 3, 2026 · 6 min read
For UK businesses importing goods from overseas, the risk of paying a supplier who then fails to deliver is one of the most significant commercial risks in international trade. Letters of credit, issued by a bank, provide a structured guarantee that reduces this risk significantly. This guide explains how they protect UK importers and when to use one.
The payment risk letters of credit solve
When a UK importer sends advance payment to an overseas supplier, they are taking on the full risk that the supplier will deliver the correct goods on time. If the supplier fails to deliver, delivers wrong or substandard goods, or simply disappears, recovering the money from overseas can be extremely difficult and expensive. For first-time transactions or suppliers in higher-risk markets, advance payment exposes the buyer to unacceptable risk.
A letter of credit (LC) replaces the buyer's credit risk with the bank's credit risk. The issuing bank (acting on the buyer's instructions) promises to pay the supplier when they present the correct shipping and title documents. The supplier knows with certainty that they will receive payment from a bank, not just a promise from an unknown overseas buyer, provided they ship the correct goods and present the correct paperwork.
Documentary requirements: the protection mechanism
The protection for the buyer comes from the documentary requirements specified in the LC. The supplier must present a bill of lading confirming shipment, a commercial invoice matching the LC terms, a packing list, a certificate of origin, and any other specified documents (inspection certificates, insurance documents, etc.) before payment is made.
The bank pays only against fully compliant documents. If the goods shipped do not match the description in the LC, or if the documentation has discrepancies, the bank can refuse payment until the supplier corrects the presentation. This means the buyer has documentary evidence that the correct goods were shipped before payment is made. It does not guarantee product quality, but it does ensure the seller has met their contractual obligations as evidenced by third-party documents.
"A letter of credit does not guarantee you get perfect goods. But it does guarantee that you only pay when someone has shipped the goods you ordered, documented by independent third parties."
- Alex Kyriakides, Partnerships and Trade Manager, Spark Finance
How UK importers apply for a letter of credit
UK importers apply to their bank or a trade finance specialist like Spark Finance. You will need: the supplier's name, address, and bank details; the goods description, quantity, and value; the shipping terms (FOB, CIF, etc.); the required documents; the port of shipment and destination; and the LC expiry date. Spark Finance can arrange LCs through specialist trade finance lenders typically within 3-7 working days.
The LC is then transmitted from the issuing bank to the supplier's bank (the advising bank) in the supplier's country. The supplier ships the goods and presents documents to their bank. If documents comply, payment is made. If not, discrepancies are raised and the supplier must correct them. This entire process is governed by internationally standardised rules (UCP 600).
Cost and when to use an LC vs simpler payment terms
LC fees are typically 0.5-1.5 percent of the transaction value for the issuance, plus transmission fees and amendment fees if terms need changing. For a 100,000 pound shipment, the LC cost is typically 500-1,500 pounds. This cost is justified for high-value first transactions, new supplier relationships, or countries with elevated payment risk.
For established supplier relationships where trust has been built over multiple successful transactions, open account terms (where the supplier ships and the buyer pays within agreed terms) are cheaper and more convenient. Letters of credit are an investment in risk management that become less necessary as relationships mature and track records are established.
The bottom line
Spark Finance arranges letters of credit for UK importers through specialist trade finance lenders, typically within 3-7 working days. Apply at apply.sparkfinance.co.uk to discuss your trade finance requirements.
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