4th May 2026
When Donald Trump announced that the United States would begin escorting stranded commercial ships through the Strait of Hormuz, he framed it as a humanitarian mission to “free up” vessels trapped for weeks. But behind the rhetoric lies a hard economic truth. Naval escorts through the world’s most important oil chokepoint are expensive, and those costs ripple directly into UK fuel prices.
The Strait of Hormuz normally carries around one‑fifth of global oil shipments, and the current conflict has already pushed crude above $126 per barrel. Even before escorts begin, the disruption has driven up petrol prices worldwide. The UK is not insulated from this—especially rural areas like Caithness, where transport costs already add a premium.
Why escorts raise global costs
Slower shipping and convoy delays
Analysts warn that U.S. Navy escort operations will increase the cost of maritime energy transport because convoys move slowly, ships must wait for protection, and overall fleet utilisation drops.
Every extra day a tanker sits idle adds cost to the cargo it carries.
Higher war‑risk insurance
Insurers raise premiums when naval escorts appear, because escorts attract hostile attention and create predictable targets. War‑risk premiums in the region are already projected to rise 5–15%.
Increased geopolitical risk
Iran has warned that U.S. forces entering the strait will be attacked.
This threat environment adds a risk premium to every barrel of oil passing through the Gulf.
Massive U.S. military deployment
Project Freedom involves guided‑missile destroyers, aircraft, unmanned systems, and around 15,000 personnel.
Sustaining this level of force is costly, and markets price in the instability.
What this means for UK petrol prices
To estimate the impact on UK pump prices, we combine:
Higher shipping costs (convoy delays, slower speeds)
Higher insurance premiums
A risk premium on Brent crude (historically $5–$10 per barrel in similar crises)
The UK’s typical refinery‑to‑retail pass‑through rate
Estimated UK petrol impact
+6–8p per litre if escorts run for a few weeks
+8–12p per litre if the crisis drags on for months
+12–15p per litre in a worst‑case scenario where Iran targets escorts and risk premiums spike
These figures reflect how quickly global oil markets react to instability in Hormuz even when the UK imports relatively little Gulf crude directly.
For rural Scotland, the effect is sharper. Transport costs and limited competition already add 3–5p per litre in places like Caithness, meaning the Highlands could see total increases of 10–17p per litre during a prolonged escort operation.
The bigger picture
Trump’s escorts may help free stranded ships, but they do not remove the underlying risk. As long as the U.S. Navy and Iran’s Revolutionary Guards face each other across a 21‑mile‑wide chokepoint, markets will price in danger.
For UK drivers—and especially Highland households—the result is simple and can expect higher prices, more volatility, and a longer road back to stable fuel costs.