As of Friday 2 October 2026, the cost of diesel in the United Kingdom has surged to £2 per litre for the first time, a milestone driven by lingering Middle East turmoil and fresh signals from Washington that could curb American exports. The jump follows a 40.5 % increase since late February, when the US first launched strikes against Iran, and mirrors record highs seen across the Atlantic.
What’s fuelling the spike?
The immediate trigger is the sharp rise in crude oil values, which have climbed from roughly $60 a barrel at the start of the year to above $100 at several points. Analysts link this to Iran’s effective closure of the Strait of Hormuz, the narrow channel that carries about one‑fifth of the world’s oil and gas. Peace talks remain deadlocked, with negotiations still centred on Tehran’s alleged attacks on tankers.
Diesel, refined from that crude, has felt the pressure directly. While Kpler’s data shows that Middle Eastern crude shipments have largely rerouted – now 40 % bypass the strait compared with just 17 % before the conflict – the flow of refined products such as diesel has not recovered, staying under 20 % of pre‑war levels.
Global response and the US warning
In an effort to ease the strain, G7 leaders have agreed to release up to 100 million barrels of diesel reserves within the next four months. French President Emmanuel Macron framed the pledge, saying allies would make the volumes available “up to 100 million barrels, within four months” and would “take no measures to restrict the exchange of energy and petroleum products between partner countries”.
Meanwhile, former President Donald Trump has signalled a possible 90‑day ban on US diesel exports, suggesting European nations dip into their own stores. When asked, he told reporters: “We may do that. They have some diesel.”
US Treasury secretary Scott Bessent added a sharper tone: “Our European partners should accelerate delivery on their existing commitments and make additional supplies immediately available to address ongoing disruptions. American farmers, truckers, and businesses should not be left carrying the burden of a global diesel shortage. America is doing its part. We look to our allies to match their commitments with action.”
What this means for Britain
Until Russia’s invasion of Ukraine, the bulk of Britain’s imported diesel came from Moscow. Those flows have now fallen to zero, with the United States and the Netherlands stepping in as the principal suppliers. Roughly 31 % of the UK’s imported diesel originates from America, accounting for about 17 % of total supply in 2025. The Netherlands, meanwhile, is the second‑largest importer of US diesel after Mexico, so any blanket export ban from Washington would push up the cost of buying Dutch‑sourced fuel as well.
Domestically, the UK’s refining capacity has waned. Once almost self‑sufficient at the start of the decade, Britain now produces just 55 % of its own diesel. Around 30 % of cars on British roads run on diesel, a figure that rises to 38 % for heavy goods vehicles. Higher operating costs for these fleets inevitably feed into the price of goods on shop shelves.
Stockpiles, advice and the way forward
Official figures show the UK holds only 42 days of imported diesel in reserve as of July 2026 – a stark contrast to Germany’s 398‑day buffer. Stock levels have fallen from over 140 days in 2008, declining as refineries closed, except for a brief pandemic‑era peak above 100 days when demand slumped
