UK Iran sanctions amendments bring expanded ship, service and cargo controls into force

The United Kingdom’s Iran (Sanctions) (Amendment) Regulations 2026 entered into force on 29 September 2026, materially expanding trade, financial and transport restrictions relevant to shipping. The official UK notice confirms that the amendments affect both the Iran (Sanctions) (Nuclear) (EU Exit) Regulations 2019 and the Iran (Sanctions) Regulations 2023.

Verified changes include a strengthened shipping regime with powers to specify ships, restrict their operation and related services, and apply enforcement measures including port-access restrictions and detention. The measures also broaden trade controls over maritime goods and technology, energy-related goods and technology, oil and petroleum products, natural gas, petrochemicals and specified software. The UK states that prohibitions can extend beyond direct exports to supply, delivery, technology transfer, making goods or technology available, and associated ancillary services, including certain third-country activity.

The revised framework also adds restrictions concerning financial services, banking relationships, investment, loans or credit, and insurance in defined Iran-connected circumstances. The Isle of Man Government’s sanctions notice, which applies the UK measures locally, says the 2023 regulations now include restrictions on technical assistance and specified services connected with designated ships, as well as prohibitions on chartering, operating and registering specified ships linked to Iran.

For maritime businesses, the immediate issue is not simply whether a vessel calls at Iran. The rule change increases the importance of identifying UK nexus across a transaction: UK-incorporated or UK-based counterparties, UK insurance or reinsurance, UK financing, UK brokers, UK technical support, UK port exposure, and goods or services controlled under the new schedules. A voyage, charterparty, ship-management agreement, bunker supply arrangement or cargo sale may involve several such touchpoints.

**Why this matters:** Shipowners, charterers, P&I interests, insurers and cargo interests should re-screen active Iran-connected business against the amended regulations and the updated controlled-goods schedules. Particular attention is warranted for beneficial ownership and control, vessel charter chains, cargo descriptions, ship-to-ship activity, insurance and reinsurance participation, technical and crewing services, and contractual sanctions clauses. The regulations do not automatically prohibit every Iran-related maritime transaction; however, the expanded ship-specification and service restrictions raise the consequence of incomplete due diligence. Parties should obtain specialist sanctions advice where a UK nexus or a potentially specified vessel, cargo or counterparty is identified.