British diesel prices have shattered the £2-per-litre barrier for the first time in history, and the numbers are brutal. The RAC confirmed the average cost now sits at over 200p, obliterating the previous record of 199.09p set in June 2022 after Russia’s invasion of Ukraine. Filling a standard 55-litre family tank costs £110 – £32 more than when the US-Israel conflict with Iran erupted in late February. Petrol hasn’t escaped either, with unleaded averaging 174.71p, meaning a fill-up now costs £96, a £23 jump in just over seven months.
Simon Williams, the RAC’s head of policy, didn’t mince words. He said diesel prices had entered “uncharted territory” and served as a stark reminder of “just how exposed the UK is to events occurring far away”. Williams warned the pain extends far beyond the forecourt, noting that record diesel prices “spell pain not only at the pumps for drivers, but for everyone who buys goods or services that rely on diesel lorries and vans,” adding that these increased costs will inevitably be passed on to consumers.
The geopolitical context is inseparable from the price at the pump. Brent crude, the global benchmark, is hovering around $108 per barrel, up from roughly $73 before the conflict began. The Strait of Hormuz, through which approximately 20% of the world’s oil supply passes, has been severely disrupted by the US blockade of Iranian ports. Russia – another major diesel producer – has implemented its own export ban following Ukrainian attacks on its refineries, tightening global supply further.
What makes Britain’s position uniquely precarious is its dependency on imports. Over half of the UK’s diesel is sourced from abroad, with 31% coming from the United States. The Netherlands and Belgium together provide more than a third. This reliance has become a strategic vulnerability. President Trump has been pressuring European governments to release their strategic fuel reserves, threatening an export ban if they refuse – a move that would hit Britain harder than most. Treasury Secretary Scott Bessent publicly urged European allies to “accelerate delivery on their existing commitments and make additional supplies immediately available,” arguing that American farmers, truckers and businesses should not bear the burden of a global diesel shortage.
Chancellor John Healey told the BBC the government is in talks with Washington and preparing for the possibility of a ban, stating the UK has its own stocks. But industry analysts remain sceptical about the wisdom of draining emergency reserves for price relief. As one commentator put it, these reserves exist to serve as a buffer against delivery shortages – they are not there to lower fuel prices. The distinction matters. Britain is not facing a supply crisis in the immediate term; it is facing a price crisis, a nuance that often gets lost in the political noise.
MP Keir Mather attempted to reassure consumers on Sky News, insisting the country’s fuel supply is sufficient and flows from diverse sources. Parliament’s own written answers support this, noting that around 90% of crude oil refined in the UK is imported, but only approximately 1% comes from the Middle East. The government’s assessment is that supply remains stable and accessible.
Yet stability in supply does not mean stability in price. The RAC’s Williams has been clear that pump prices will not fall until there is a “sustained lower oil price – over several weeks, not days”. That prospect looks increasingly distant as the conflict grinds on.
There is a darker irony at play. Chancellor Healey is set to reap a £4 billion tax windfall from soaring fuel prices, putting him under mounting pressure to announce relief for drivers in the upcoming Budget. The freeze on fuel duty, implemented by the Conservative government in 2022, is due to expire at the end of the year. Whether Healey uses his windfall to extend it will be a defining political test.
The uncomfortable truth is that Britain’s diesel vulnerability is not new. It has been building for years, through refinery closures, reduced domestic refining capacity, and a growing reliance on imported fuel. The US-Israel conflict with Iran merely exposed what was already there. As one Lords debate heard, this is “in essence, a price crisis and not a supply crisis” – but for millions of British motorists, hauliers and businesses, the distinction is academic when the cost of filling up has never been higher.
The RAC’s figures leave no room for optimism. Diesel has risen by 59p per litre, or just under 40%, since the conflict began. There is no indication prices are going to slow down. And with Trump threatening export bans, European reserves being eyed by Washington, and the Middle East showing no signs of stabilising, British drivers should brace for more pain before any relief arrives.
