The Strait of Hormuz Crisis: What it Means for UK Supply Chains

Since 28 February 2026, the Strait of Hormuz — the world's most critical maritime chokepoint — has been effectively closed to international shipping. What began as a geopolitical flashpoint has rapidly become the largest disruption to global energy and trade flows since the 1970s oil crises. Here in the UK, the effects are already being felt. This is what you need to know.

What Is the Strait of Hormuz, and Why Does It Matter?

The Strait of Hormuz is a narrow waterway — at its tightest, just 33 kilometres wide — separating Iran from the Sultanate of Oman. It connects the Persian Gulf, home to some of the world's largest oil and gas producers, to the wider Arabian Sea and international shipping lanes.

Under normal conditions, roughly 20% of the world's seaborne oil trade and a fifth of global liquefied natural gas (LNG) passes through this single corridor every day. Major container shipping firms — Maersk, CMA CGM, Hapag-Lloyd, MSC — all routed vessels through it. It was not just an energy artery; it carried fertilisers, chemicals, industrial materials, and consumer goods destined for markets across Europe, Asia, and beyond.

Ship transits through the strait collapsed from approximately 130 per day in February 2026 to just 6 in March — a near-total shutdown of 95%. Around 230 loaded oil tankers were reported sitting stranded inside the Gulf as of early April, unable to depart.

How Did We Get Here?

On 28 February 2026, the United States and Israel launched military strikes against Iran. In retaliation, Iran's Islamic Revolutionary Guard Corps (IRGC) issued warnings forbidding passage through the Strait of Hormuz, conducted confirmed attacks on at least 21 merchant vessels, and reportedly laid sea mines in the waterway. The Houthi movement in Yemen simultaneously announced a resumption of attacks on commercial shipping in the Red Sea.

Major shipping operators immediately suspended operations. The combination of military threat, insurance withdrawal, and the practical danger of mine-infested waters made passage commercially and physically unviable for most carriers virtually overnight.

A fragile ceasefire was announced in early April, but as of 9 April, the strait remained effectively closed, with Iran continuing to restrict and condition traffic. Over 230 loaded tankers remained stranded inside the Gulf.

Warning: Even if peace holds

Analysts warn that even if the ceasefire is sustained and the strait reopens today, the economic shock already embedded in global supply chains could take weeks or months to unwind. The disruption has been described by the head of the International Energy Agency as "the largest supply disruption in the history of the global oil market."

Beyond Oil: The Commodities at Risk

Media coverage has focused heavily on crude oil and fuel prices — and rightly so. But the closure of the strait is disrupting a much wider range of goods that UK businesses and households rely on.

Fertilisers

Around a third of globally traded fertiliser transits the strait. Natural gas — key to producing nitrogen fertiliser — has seen prices spike up to 70%. Russia has suspended ammonium nitrate exports. China has blocked phosphate. UK farmers face significantly higher input costs at a critical planting period.

Plastics & Chemicals

About a third of global seaborne methanol — a key feedstock for resins, coatings, and plastics — passes through the strait. Monoethylene glycol (MEG), used in polyester, packaging, and textiles, is also severely disrupted. Expect rising costs across packaging and consumer goods.

Metals & Steelmaking

The Gulf supplies premium iron ore pellets and direct-reduced iron for global steelmaking. Shipowners avoided the region almost immediately, forcing buyers to pause procurement. UK manufacturers may see steel and aluminium input costs rise.

LNG & Home Energy

Around 20% of the world's liquefied natural gas normally transits the strait. The UK, as a net energy importer, is particularly exposed. UK petrol prices rose by approximately 14p per litre in the first three weeks of the crisis; diesel by around 29p per litre.

Semiconductors & Tech

Qatar produces roughly 30% of the world's helium, essential for semiconductor manufacturing. Disruption here feeds directly into global supply chains for electronics, automotive components, and industrial equipment.

Food Prices

Higher fertiliser costs, shortages in CO₂, elevated fuel surcharges on freight, and rising food production input costs are feeding through to supermarket shelves. Low-income households, who spend a larger share of income on food, will feel this hardest.

The Direct Impact: Crisis for UK Supply Chains

The United Kingdom is particularly exposed. As a net importer of both oil and gas, higher energy prices is a Crisis for UK supply chain, they directly squeeze UK household and business budgets in a way that energy-exporting nations do not feel. The IMF has singled out the UK as one of the hardest-hit advanced economies in its latest assessment.

For supply chains specifically, the disruption operates through several interconnected channels:

Rerouting via the Cape of Good Hope

With both the Strait of Hormuz and the Red Sea (via Suez) compromised, vessels carrying goods to and from Asia, the Middle East, and East Africa are being diverted around the southern tip of Africa — adding approximately 10 to 14 days to transit times and significantly increasing fuel and operating costs per voyage.

Freight Rate Volatility

Around 170 containerships — representing approximately 450,000 TEU (twenty-foot equivalent units) of global container capacity — are currently trapped inside the Gulf or rerouted to longer Cape routes. This tightens available capacity on key trade lanes. War risk insurance premiums are rising sharply and being passed directly to shippers through emergency surcharges.

Inflation and Interest Rate Consequences

UK inflation, which had been on track to fall towards the Bank of England's 2% target through spring 2026, is now expected to remain elevated between 3% and 3.5% through the second and third quarters of the year. Rate cuts that had been anticipated earlier in 2026 have been shelved, and mortgage rates have already risen as wholesale borrowing costs increased. UK GDP growth forecasts for 2026 have been cut, with Oxford Economics projecting just 0.4% growth.

The Resolution Foundation's assessment

The Resolution Foundation, a leading UK economic think tank, estimates that UK households will already be around £500 worse off in 2026 as a direct result of the conflict and the disruption to energy flows through the strait.

What to Expect: Three Scenarios

Scenario	Conditions	UK Outlook	Risk
Short disruption Strait reopens within weeks	Ceasefire holds, insurance returns, tankers clear the backlog	Freight rates soften gradually; inflation remains elevated 3–6 months; some energy relief by summer	Moderate
Extended disruption Strait restricted through Q3 2026	Conflict remains unresolved; Cape re-routing entrenched; port congestion intensifies	Persistent above-target inflation; stagnant growth; rising household cost pressures; UK GDP growth likely under 1%	High
Prolonged closure 6+ months effectively closed	Oxford Economics worst-case: global inflation reaches 7.7%, advanced economies tip into recession	Energy rationing possible in worst case; UK recession; sharply higher mortgage costs; widespread food price inflation	Severe

Duration is the decisive variable. The longer the strait remains closed or severely restricted, the deeper the damage to trade flows, price stability, and household finances. Global merchandise trade growth is already projected to decelerate from 4.7% in 2025 to between 1.5% and 2.5% in 2026 as a direct result of the disruption.

How UK Households Should Prepare

We are not suggesting panic buying or drastic action. But the evidence is clear: this disruption is not a short-term blip, and UK households that understand the pressures ahead and plan accordingly will be better positioned than those who do not.

• 1 Review your household energy situation now Energy prices are likely to remain elevated through 2026 regardless of ceasefire outcomes. If you are on a variable energy tariff, consider whether a fixed-rate deal now — even at a premium — provides better budget certainty over the next 12 months. Improving home energy efficiency (draught-proofing, insulation) has never had a better return on investment.

• 2 Reconsider fuel and transport costs With diesel prices having risen sharply and further volatility likely, households and small businesses that depend heavily on road transport — tradespeople, rural residents, delivery-dependent businesses — should factor elevated fuel costs into their financial planning for the rest of the year.

• 3 Expect grocery and food prices to rise further Fertiliser shortages, higher energy costs for food production, and rising freight surcharges all feed into food costs. Prices for packaged goods, proteins, and staples are likely to continue rising. Households should build this into budgeting, particularly for families on fixed incomes.

• 4 Be cautious about big-ticket purchases reliant on imported components Electronics, appliances, vehicles, and industrial equipment that depend on components sourced from Asia or the Gulf region may face delays and price increases. If you are timing a significant purchase, factor in potential supply delays or cost rises before committing.

• 5 Review mortgage and borrowing exposure Rate cuts that were widely expected in 2026 have been shelved. If your fixed-rate mortgage deal is due for renewal soon, be aware that market rates have risen since the crisis began. Factor this into your remortgaging timeline and seek independent financial advice if needed.

• 6 Build a modest household buffer This is not about hoarding — it is about sensible resilience. A small reserve of non-perishable essentials (long-life foods, medicines, household supplies) provides genuine peace of mind against short-term disruption to availability or prices. The NHS recommends households maintain a basic emergency supply in any case.

What This Means for UK Businesses

For businesses that rely on international freight — whether importing components, raw materials, or finished goods, or exporting to markets in Asia and the Middle East — the current environment demands proactive action rather than a wait-and-see approach.

Reactive logistics decisions during periods of geopolitical uncertainty are consistently more expensive than strategic ones made early. Businesses that plan alternative routing options, review supplier geography, and lock in capacity earlier in the booking cycle are insulating themselves from the worst of the disruption.

At AOG Worldwide, we work with businesses across aerospace, manufacturing, events, and precision engineering that cannot afford supply chain failure. We are actively helping clients navigate rerouting options, manage extended transit times, and maintain supply chain continuity during this unprecedented period of disruption.

Need to Keep Your Supply Chain Moving?

Our operations team is available 24/7. Whether you are dealing with stranded cargo, extended transit times, or urgent freight requirements, we are here to help.

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Sources: This article draws on data and analysis from UN Trade and Development (UNCTAD), the International Energy Agency (IEA), the International Monetary Fund (IMF), the House of Commons Library, the International Maritime Organization (IMO), the World Economic Forum, the Resolution Foundation, Oxford Economics, and industry tracking data from HormuzTracker and Hawley Logistics. All statistics referenced reflect conditions as of 16 April 2026. The situation remains fast-moving and readers are encouraged to monitor developments closely.

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