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Explainer · last look 12 September 2026 Why does a Gulf shock make UK deliveries dearer? The lorry burns diesel. Diesel is priced off a world oil pool. When the Strait of Hormuz tightens, Brent can move the same day. Britain still has to buy diesel, jet and heating oil. Official DUKES figures for 2025 show the UK as a large net importer of oil products. Raise diesel and you raise the cost of moving food that is already in the country. The shop can look full while the delivery has already got dearer. |
How fast does a Gulf shock reach Britain?
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Same day Brent moves. The cargo does not have to be on a Humber jetty first. |
1–14 days Diesel, jet and heating oil follow on the wholesale rack and the forecourt. |
Then the bill Haulage invoices follow the new diesel price. |
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Who pays first when diesel goes up?
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1 · The pump Diesel on the forecourt. Hauliers see this first. |
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2 · The lorry run Every loaded lorry costs more — including food already in a British warehouse. |
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3 · The heating tank Off-grid homes and farms. Heating oil tracks wholesale jet more than it tracks unleaded. Scotland feels this sooner since Grangemouth closed. |
Where did UK diesel and jet come from in 2025?
| Diesel · United States | Main origin in DUKES 2025 |
| Diesel · Netherlands | Large share |
| Diesel · Belgium | Large share |
| Jet · Kuwait | About 35% of UK jet imports |
| Jet · India | Over 1 million tonnes |
| Jet · Saudi Arabia | Over 1 million tonnes |
| Jet · UAE | Over 1 million tonnes |
Oil is one pool. A tanker does not have to load in the Gulf this week for Brent to move. Jet is the UK product that still names the Gulf on the import list. Heating oil in a farmhouse follows that wholesale number.
Why is a Hormuz move louder after Grangemouth closed?
| While Grangemouth refined crude More finished product could be made on these islands. |
After it closed The UK buys more finished diesel and jet. A world-price jump lands faster at the pump and in the tank. |
What should I watch if my cost sits on diesel?
| If you | Watch |
| Run lorries or a warehouse | Brent and the UK diesel rack. Budget the mile before the forecourt looks empty. |
| Heat with oil | Wholesale jet. |
| Buy jet | Gulf product prices and Rotterdam. |
Gate: Strait of Hormuz. Door: Immingham. Board: are the sea routes into the UK open?.
DUKES 2025 product-import origins. Fuel clock: common UK wholesale lag after a Brent move. Not a price forecast.