21 August 2026
Executive Summary
Businesses with exposure to Iran, Middle Eastern trade or counterparties connected to Iranian commerce should closely monitor developments in US sanctions policy.
US Treasury Secretary Scott Bessent has announced that the United States intends to impose a substantial new sanctions package against Iran, with further details expected to be provided on Monday.
President Donald Trump has also warned of economic consequences for countries providing economic support to Iran, while US officials have specifically highlighted China’s continuing commercial relationship with Tehran. China remains by far the largest buyer of Iranian oil.
However, the detailed measures have not yet been published.
Businesses should therefore not treat measures currently being discussed as though they are already legally in force.
The appropriate response at this stage is preparedness rather than assumption.
The emerging risk is that companies may increasingly need to consider not only:
“Are we dealing directly with Iran?”
but also:
“Could our counterparties, banks, vessels or supply-chain partners create indirect Iran-related exposure?”
UK Impact
UK businesses already operate within an established UK sanctions regime relating to Iran, and the UK maintains official designation lists and statutory sanctions guidance.
Any additional US measures would not automatically become UK law.
However, US sanctions can still have significant commercial consequences for British companies, particularly where transactions involve:
- US dollars.
- US banks or correspondent banks.
- International commodity trading.
- Shipping companies.
- Marine insurers.
- Trade finance.
- Overseas distributors.
- Joint-venture partners.
- International supply chains.
Banks, insurers and other financial institutions may also adopt risk policies that are more restrictive than the minimum legal requirement.
This means a transaction can become commercially difficult even where the underlying activity is not itself prohibited under UK law.
Companies therefore need to distinguish carefully between:
legal prohibition, sanctions exposure and commercial risk appetite.
Global Impact
The potential measures come at an already highly sensitive point for international trade and energy markets.
China remains Iran’s most important oil customer. Reuters reports that it purchased approximately 1.38 million barrels per day of Iranian crude in 2025, while countries including Turkey, Iraq, Pakistan and Oman maintain varying degrees of commercial relationship with Tehran.
US officials have previously raised the possibility of secondary sanctions against purchasers of Iranian oil, meaning businesses should pay particular attention to how any new measures address third-country transactions.
Energy markets are already reacting to the deteriorating geopolitical environment.
Brent crude was trading around $93.55 per barrel on Friday morning, with Middle Eastern supply disruption and uncertainty surrounding Iran contributing to continued market pressure.
The precise consequences of the forthcoming US measures cannot yet be known.
That uncertainty is itself relevant to businesses.
Companies entering contracts, financing shipments or arranging international payments today may need those transactions to remain compliant and commercially executable after the detailed measures are announced.
Our View
Businesses with Iran, Middle East, commodity, shipping or international-payment exposure should use the period before further measures are announced to identify potential indirect sanctions pathways.
Companies should ask:
- Which counterparties have known commercial exposure to Iran?
- Which banks process our international payments?
- Are beneficial owners fully identified?
- Do any suppliers depend upon Iranian-origin commodities or energy?
- Do shipping arrangements involve vessels, owners or operators with Iranian connections?
- Are counterparties themselves trading with Iranian entities?
- Do contracts contain appropriate sanctions clauses?
- Could a compliant transaction nevertheless be rejected by a bank or insurer?
- Which transactions could be paused quickly if the regulatory position changes?
- Who within the organisation is responsible for monitoring sanctions developments?
- How quickly can compliance procedures be updated following a new designation?
- Are decisions being based upon official sanctions notices rather than media speculation?
Businesses should not assume that measures under discussion are already in force, nor attempt to predict the precise scope of rules that have not yet been published.
The sensible risk-management response is to understand exposure now and monitor authoritative announcements closely.
In a rapidly changing sanctions environment, discovering an indirect connection after a payment has been made, a vessel chartered or cargo loaded can leave considerably fewer options.
The objective is not to predict Monday’s announcement.
It is to make sure the business is ready to respond when the details become known.
Risk Indicator: HIGH – DEVELOPING
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The information contained within these Market Alerts is provided for general market awareness and informational purposes only. It does not constitute financial, legal, investment, regulatory or insurance advice. Whilst every effort has been made to ensure accuracy at the time of publication using multiple reputable and independently verified sources, geopolitical events, legislation, regulation and market conditions may change rapidly. Readers should obtain appropriate professional advice before acting upon any information contained herein.
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