**UK Diesel Price Reaches Record High Amid Middle East Conflict**
As of September 28, 2026, diesel prices in the UK have surged to an unprecedented level, hitting 199.18 pence per litre, according to data released by the RAC (Royal Automobile Club). This significant increase is attributed to ongoing disruptions in oil production and transportation resulting from the war in the Middle East, particularly the conflict involving Iran.
In addition to diesel, petrol prices are also on the rise, currently averaging 174.13 pence per litre. The situation has escalated over the past seven months, with the conflict that began in February leading to a dramatic increase in fuel costs. Diesel prices have risen by 59 pence per litre, marking an increase of nearly 40% since the onset of hostilities. This latest price surpasses the previous record of 199.09 pence set in June 2022.
The financial impact of these rising fuel prices is significant. Filling an average family car with diesel now costs approximately £110, which is £31 more than it did at the beginning of the conflict. Petrol prices have also increased, now standing at 41 pence per litre higher than before the conflict began, although they remain below the peak prices seen in 2022.
Simon Williams, head of policy at the RAC, highlighted the broader implications of these price hikes. He noted that the record diesel prices not only affect drivers at the pump but also have a ripple effect on the cost of goods and services that rely on diesel-powered transportation. Williams cautioned that consumers should expect these increased costs to be passed on, affecting prices across various sectors.
The current spike in fuel prices is largely driven by a constrained international supply of diesel, which has been exacerbated by the Middle Eastern conflict. The price of Brent crude oil, a key benchmark for global oil prices, has risen sharply, currently trading around $108 per barrel, up from approximately $73 before the US invasion of Iran. This increase in crude oil prices directly influences the cost of refined fuels, including diesel.
The conflict has not only disrupted oil production in the Middle East but has also led to additional supply constraints. Russia, a significant player in the global oil market, has imposed an export ban on diesel following attacks on its refineries by Ukraine, further limiting the availability of this essential fuel.
Diesel, which is more challenging to refine than petrol, is crucial for various sectors, including haulage and agriculture. The UK remains heavily reliant on diesel imports, as the country's four refineries produce sufficient petrol but do not meet the domestic demand for diesel.
According to the Department for Transport, there were 15.1 million diesel vehicles registered on UK roads as of June 2026, a decrease from 15.7 million the previous year. This includes 9.8 million diesel cars, down from 10.4 million a year earlier. The decline in diesel vehicle registrations may reflect changing consumer preferences and a growing awareness of the environmental impact of diesel engines.
As the situation continues to develop, industry experts and consumers alike are closely monitoring fuel prices, with the RAC indicating that relief at the pumps may not occur until there is a sustained decrease in oil prices over an extended period. The ongoing geopolitical tensions and their impact on global oil supply remain critical factors in determining future fuel costs in the UK.