Enhanced focus on shipping
The most significant impact is likely to be felt by the maritime sector. The Regulations introduce a strengthened shipping sanctions regime, including broad powers for the UK Government to specify vessels suspected of involvement in activities linked to prohibited trade, including the carriage of restricted goods, dual-use items, oil, gas and nuclear-related goods. Once specified, a vessel becomes subject to extensive restrictions, including prohibitions on chartering and operation, restrictions on the provision of maritime services, and potential port entry and detention measures. The strengthened ship-specification powers form part of the UK's broader efforts to increase pressure on Iran, deter hostile activity and encourage respect for human rights in Iran.
Key measures include:
- Prohibitions on chartering or operating specified ships.
- Restrictions on providing brokering, crewing, technical, financial, insurance and other maritime services relating to specified vessels.
- Powers to impose port access restrictions, detention measures and movement controls.
- Prohibitions relating to the acquisition, sale, transfer and registration of certain vessels.
The amendments also extend trade controls affecting maritime commerce, including restrictions on energy-related goods and technology, maritime goods and technology, oil and petroleum products, natural gas and petrochemicals. These prohibitions apply not only to exports from the UK but also to certain third-country trade, technology transfers and associated services.
For shipowners, operators, charterers, P&I Clubs, brokers and insurers, the Regulations significantly increase sanctions screening and due diligence obligations. Businesses will need to assess vessel ownership, control, charter arrangements, cargoes, counterparties and ship-to-ship transfer activity with increased scrutiny.
Aviation sector impacts
The Regulations also introduce new aviation-related measures. Most notably, the Regulations prohibit certain Iranian cargo aircraft from landing in the UK, subject to limited exceptions. The prohibition applies to certain Iranian aircraft used exclusively for the provision of air cargo services.
While the aviation provisions are narrower than the maritime measures, they may have implications for:
- Cargo operators with links to Iran;
- Aircraft leasing and financing transactions involving Iranian counterparties;
- Aviation insurers and reinsurers;
- Ground handling and airport service providers.
In addition, the broader financial restrictions introduced by the Regulations, including restrictions on lending, investment, correspondent banking relationships and insurance, may indirectly affect aviation sector transactions involving Iranian interests.
Expanded trade restrictions
Beyond the new shipping and aviation measures, the Regulations significantly broaden UK trade restrictions relating to Iran. The amendments introduce extensive prohibitions covering the export, supply, delivery, transfer and making available of a wide range of goods, technology and associated services connected with key sectors of the Iranian economy. These include energy-related goods and technology, maritime goods and technology, oil and petroleum products, natural gas, petrochemicals, precious metals, diamonds and certain software and technical services. The restrictions also extend to ancillary services, including financing, brokering, technical assistance and insurance.
A notable feature of the new regime is that it extends beyond direct exports from the United Kingdom. Certain prohibitions apply to third-country trade, meaning that UK persons may face restrictions even where goods do not enter or leave the UK. As a result, businesses involved in international supply chains, commodity trading, logistics, shipbroking, aircraft leasing, trade finance and insurance will need to assess Iranian nexus risks across their global operations.
Practical considerations
This represents the most substantial expansion of UK Iran sanctions in recent years and signals a renewed focus on restricting Iranian access to international trade, transport, financial services and related support services. While the headline measures focus on shipping and aviation, the Regulations also introduce far-reaching trade and financial restrictions that are likely to affect a broad range of businesses involved in international transportation, commodities trading, logistics, banking and insurance. Companies should review sanctions compliance frameworks, conduct enhanced counterparty and supply-chain due diligence, and ensure contractual protections remain adequate in light of the expanded prohibitions.
The Regulations came into force on 29 September 2026. For advice on how the new UK Iran sanctions may affect your operations, trade, contracts, financing arrangements or compliance obligations, please contact Jonathan Moss or Laura Segger.
