How the US-Iran Conflict Could Affect UK Business Energy Costs

The conflict involving the US and Iran is no longer just an international headline. It is now an energy market issue with clear implications for UK businesses.

As of Monday 9 March 2026, oil has surged, shipping through the Strait of Hormuz has been heavily disrupted, and wider gas and freight markets have already reacted. That matters in the UK because businesses here are still exposed to global energy pricing, particularly when disruption affects oil, LNG and shipping at the same time.

For many firms, the risk is not limited to the cost of energy itself. When markets tighten, cost pressure can also show up in diesel, transport, imported materials, refrigeration, fertiliser and wider supply chains. 

Why the US-Iran conflict matters to UK business energy users

The Strait of Hormuz is one of the world’s most important energy shipping routes. It normally carries about 20% of global oil and LNG flows, so major disruption there has an immediate impact on market confidence and pricing. Since the conflict escalated, ships have been damaged, around 150 vessels have been stranded near the strait, and some insurers have pulled war-risk cover, pushing shipping costs higher.

That feeds into UK business energy costs in a few ways. Oil prices have already jumped to around $120 a barrel, European gas markets have reacted, and investors have started pricing in a higher inflation risk for energy-importing economies such as the UK. Even domestic UK forecasts have moved, with Cornwall Insight warning that wholesale price pressure linked to the conflict could lift Britain’s domestic price cap by around 10% in July. Business contracts do not work in the same way as household tariffs, but the direction of travel is clear. 

Which UK sectors are most exposed?

The sectors most exposed are the ones where energy, fuel and supply chain pressure overlap.

Agriculture

Agriculture is one of the clearest pressure points because the exposure is stacked. It is not just a question of red diesel. Farms and growers can be affected through grain drying, irrigation, refrigeration, haulage and fertiliser. With fertiliser supply already under pressure and prices rising ahead of planting season, agriculture is vulnerable to cost increases landing across several parts of the business at once.

That matters because agriculture rarely feels market disruption in one neat line item. A farm business can be hit by higher fuel costs, more expensive fertiliser and rising storage or transport costs at the same time. For growers and food producers, that can quickly become a margin issue rather than just an operating nuisance. 

Manufacturing

Manufacturing is another obvious area of exposure, especially for sites with high electricity and gas use. Businesses relying on process heat, steam, ovens, drying lines, continuous production or temperature-sensitive operations are more likely to feel any sustained period of market volatility.

The challenge is that manufacturers are often exposed from both directions. If wholesale energy remains volatile while freight and raw material costs also move higher, the squeeze does not stop at the utility bill. It starts feeding into production costs more broadly. Reuters has already reported that the conflict is pushing up a wider basket of commodities and creating operational disruption across global business. 

Food production and cold storage

Food production sits at the overlap between agriculture risk and manufacturing risk. Processors can face higher input costs from the supply chain while also dealing with their own gas and electricity demand for cooking, processing, steam and chilled environments.Cold storage businesses are particularly exposed because refrigeration cannot simply be switched off. If electricity prices stay volatile and transport costs keep rising, operators can end up under pressure on both storage and distribution. That combination makes food manufacturing and cold chain operations especially sensitive to this type of market shock. This is an inference based on the market disruptions already reported and the energy profile of those sectors. 

Logistics and distribution

Logistics businesses are often among the first to feel the impact when oil and shipping markets move. Fuel costs can rise quickly, freight rates can climb, and insurance premiums can add further pressure to routes already affected by disruption.

That is already happening. Shipping costs from the Middle East have surged, war-risk premiums have jumped from around 0.2% to 1% of vessel value in a matter of days, and vessel availability has tightened as operators deal with stranded cargo and delayed movements. For logistics firms, that is a direct commercial issue. For every other sector, it becomes an indirect one through higher delivery and supply chain costs. 

Multi-site businesses

Multi-site businesses should not dismiss this as a problem for heavy industry alone. Retailers, hospitality groups, education trusts, warehouse operators and healthcare providers can all feel the impact when relatively modest increases are repeated across a large estate.

The risk here is cumulative. One site may be able to absorb a rise in electricity, gas or distribution costs. Twenty sites may not do so as easily. In volatile conditions, repeated cost increases across a portfolio can turn into a sizeable overhead very quickly. That point is an inference from the reported market moves and how multi-site energy portfolios work. 

Could this become another energy crisis?

It could, but the more credible view is that the conflict has materially increased the risk of further energy market volatility. A longer period of disruption in the Gulf would keep pressure on oil, LNG, shipping and insurance markets. Additional production cuts in the region would add to that pressure. Saudi Aramco has already begun cutting output at two oilfields, and other Gulf producers have also scaled back volumes or declared force majeure because of the disruption.

That does not automatically mean a repeat of the last full energy crisis. It does mean that businesses should not assume this will remain a short-lived market wobble. Even without a worst-case scenario, sharp moves in oil, gas and freight can still affect renewal timing, procurement decisions and budget forecasts. 

Likely scenarios from here

The first and probably most manageable scenario is continued disruption without a wider regional escalation. In that case, markets may stay volatile for a period, but without tipping into a prolonged crisis. Businesses would still face a more difficult buying environment and less certainty around future costs.

The second scenario is a longer period of disruption to shipping and exports through the Gulf. That would keep pressure on oil, LNG and freight for longer and would make it more likely that higher costs spread more deeply across sectors. Reuters has also reported that analysts at JP Morgan see further downside risk if critical Iranian export infrastructure such as Kharg Island, which handles about 90% of Iran’s crude exports, becomes a direct focus.

The third scenario is de-escalation. That would help calm markets, but it would not necessarily remove the pressure overnight. Once freight rates, insurance premiums and risk pricing move up, they do not always fall back immediately just because the tone of the headlines changes. That is an inference, but it is consistent with the shipping disruption already reported. 

What UK businesses should do now

The key point is to avoid drifting into a volatile market without knowing where you stand.

If your business is approaching renewal, out of contract, or simply unclear on its current position, now is the time to review it. That is especially true for businesses in agriculture, manufacturing, food production, logistics and multi-site operations, where even relatively modest movements can have a noticeable cost impact.

Markets do not need to hit crisis levels to create commercial pressure. A period of higher volatility is enough to make timing matter. That is why contract visibility matters here. Not because panic helps, but because clarity does.

The US-Iran conflict may be happening far from the UK, but its effect on global energy and shipping markets is already being felt. Oil is up, shipping routes are under strain, and key sectors are exposed to higher costs from more than one direction.

For UK business energy users, the practical question is simple: do you know where your contract stands if volatility continues?

If you are not clear on your contract position, now is the time to review it – get in touch with us today for your free contract review.

FAQ: US-Iran conflict and UK business energy costs

Could the US-Iran conflict affect UK business energy prices?

Yes. The conflict has already pushed up oil prices, disrupted shipping through the Strait of Hormuz and added pressure to wider energy markets. For UK businesses, that increases the risk of volatility across electricity, gas, fuel and supply chain costs.

Why does the Strait of Hormuz matter to UK businesses?

The Strait of Hormuz is one of the world’s most important energy shipping routes, carrying around a fifth of global oil and LNG flows. When disruption affects that route, it can tighten supply, increase shipping risk and push up market prices well beyond the Middle East.

Which UK sectors are most exposed?

The sectors most exposed are agriculture, manufacturing, food production, logistics, cold storage and multi-site businesses. These sectors are more vulnerable because they are affected not just by energy prices, but also by fuel, freight, refrigeration, fertiliser and wider input costs.

Why is agriculture so exposed to energy market volatility?

Agriculture is affected from several angles at once. Fuel, grain drying, irrigation, refrigeration, fertiliser and transport can all become more expensive when global energy and shipping markets tighten. That makes agriculture one of the most layered exposures in this type of market event.

Could this become another energy crisis?

It could increase the risk of a wider energy crisis, but that is not guaranteed. The more immediate issue is that it has already increased the risk of further market volatility. Businesses do not need a full crisis to face higher costs or reduced buying options.

Will this affect only large energy users?

No. Larger users will often feel the impact more sharply because of their consumption profile, but smaller and mid-sized businesses can still be affected through higher electricity and gas costs, rising fuel prices and more expensive supplier or distribution costs. This is partly a market inference based on the reported moves in oil, gas and freight.

What should UK business owners do now?

Business owners should review their contract position now, especially if they are approaching renewal, out of contract or unclear on current terms. In volatile markets, leaving contract decisions too late can reduce the options available. This point is an inference based on market volatility and commercial procurement timing rather than a direct source quote.

Can global conflict affect business energy costs even if the UK does not buy directly from Iran?

Yes. The impact comes through global pricing, supply disruption, shipping risk and market sentiment. UK businesses do not need to buy Iranian energy directly for costs to move if international oil, gas and freight markets are already reacting.

Are logistics and transport businesses likely to feel this first?

They are among the businesses most likely to feel it quickly because fuel, freight and insurance costs can respond fast when oil prices rise and shipping routes are disrupted. That can then flow into the wider supply chain.

How long could the impact last?

That depends on whether the conflict escalates, stabilises or begins to ease. Even if the situation calms, higher freight rates, insurance costs and energy market risk can take time to unwind. That final point is an inference, but it is consistent with the shipping and pricing disruption already reported.