UK Fuel Prices May 2026: Petrol and Diesel Still at Record Highs

Published: 1 May 2026. The English Chronicle Desk. The English Chronicle Online

As the UK enters the early May bank holiday weekend—predicted to be the busiest on the roads in a decade—millions of drivers are facing a “forecourt sting” that shows little sign of fully subsiding. While the initial “rocket-like” surge of March has softened into a “feather-like” decline, the ongoing Iran war and the closure of the Strait of Hormuz continue to keep petrol and diesel prices at levels that would have seemed unthinkable just six months ago.

Today, the average cost of filling a family car with unleaded has hit £86, while diesel drivers are facing a staggering £104 per tank—a £27 increase compared to this time last year.

Following the peak volatility of late March and early April, prices have begun a slow, agonizing crawl downward, but remain highly elevated.

The Petrol Outlook: Unleaded has dipped slightly from its early-April peak of 160p per litre to an average of 157.2p today. However, the RAC warns that because the retail-to-wholesale spread remains tight, petrol prices may actually see a 1-3p increase in the coming days.

The Diesel Divergence: Diesel has seen a more significant “pullback,” dropping from a peak of 193p to approximately 189.2p. Analysts suggest there is room for diesel to fall a further 2–4p this week, provided wholesale costs don’t spike again.

The “Hormuz” Premium: The ongoing disruption in the Middle East—responsible for 20% of global oil trade—has added what experts call a “security premium” of roughly 15-20p per litre to the base price of UK fuel.

Many motorists are asking why pump prices aren’t falling as fast as the recent (slight) dips in Brent Crude would suggest.

“Rocket and Feather” Pricing: The Competition and Markets Authority (CMA) has previously highlighted this phenomenon, where retailers are quick to hike prices when oil rises but “painfully slow” to pass on savings when wholesale costs drop.

The Jet Fuel Competition: Because the Iran war has disrupted the supply of “middle distillates,” diesel is currently competing for refinery space with aviation fuel. As air travel surges for the summer season, this competition keeps diesel prices artificially high.

The Supermarket Squeeze: Unlike previous years, the “Big Four” supermarkets (Tesco, Asda, Sainsbury’s, Morrisons) are no longer engaging in aggressive price wars. Retail margins have risen by an estimated 6p per litre compared to pre-pandemic levels.

The high cost of fuel is doing more than just draining holiday budgets; it is fueling a broader “national security emergency” of inflation.

Stagflation Risk: With inflation hitting 3.3% in March, economists warn the UK is entering a period of “stagflation”—where prices rise while the economy remains stagnant.

The Grocery Connection: As we saw with the “billions of meals at risk” warning from fertilizer bosses, the high cost of diesel for tractors and delivery lorries is directly feeding into the price of bread, milk, and eggs.

The “Dopamine Desert”: For the 19 million people planning leisure trips this weekend, fuel costs have turned a simple drive into a source of financial stress. 8% of drivers say they will drive a shorter distance this weekend specifically to save on petrol.

With the King’s Speech approaching on May 13, there is mounting pressure on the Chancellor to extend the 5p fuel duty cut, which was originally intended to be temporary.

“The government cannot talk about ‘resilience’ while the average worker is paying £100 just to get to work,” said one motoring lobbyist. “We need more than just a duty freeze; we need a transparency mandate that forces retailers to pass on wholesale drops immediately.”

As the Southbank Centre celebrates 75 years and the RHS Wisley wisteria blooms, the UK’s roads remain a mirror of the global crisis. For those heading out this bank holiday, the advice remains the same: shop around. Northern Ireland remains the cheapest place in the UK for fuel (135.5p for petrol), proving that even in a global war, local competition still has the power to shave a few pounds off the bill.

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