UK petrol prices jumped approximately 5p per litre in just a single week, reflecting the broader impact that the ongoing Iran conflict is having on global energy markets. On September 9, 2026, Brent crude climbed back above $100 per barrel, reaching its highest level since July as the war that began in late February continued.
Before the conflict, UK petrol prices sat at around 132p per litre. They have since increased to roughly 160p per litre, marking a total surge of about 28p per litre over the course of the seven-month conflict. Consequently, filling a standard 55-litre tank currently costs about 15 pounds more than it did prior to the initial airstrikes.
Drivers Behind the Price Spike
The military conflict began on February 28, 2026, when US and Israeli forces launched strikes against Iran, creating ongoing military escalation and supply route threats. A fresh catalyst occurred in early September 2026 when US forces struck Iranian tankers, pushing crude prices roughly 40% above their pre-war baseline of about $70 per barrel.
At the center of the disruption is the Strait of Hormuz, a narrow waterway between Iran and the Arabian Peninsula through which approximately 20% of the world's oil and gas passes. Refined product shortages, notably in diesel and jet fuel, have further added to the pressure beyond crude oil alone.
Global Economic Impact
The United States is also experiencing significant cost increases. Average gasoline prices have risen to between $4.15 and $4.22 per gallon, reflecting a nearly 40% increase since hostilities started, while diesel has neared record levels close to $5.90 per gallon. Estimates indicate the conflict has introduced more than $100 billion in additional fuel expenses for American consumers and businesses.
In the UK, motoring organizations such as the RAC have monitored daily price movements as geopolitical risks quickly translate to pump prices. The rapid 5p weekly increase highlights how quickly oil markets can shift consumer costs, while UK government officials reportedly weigh potential adjustments to fuel duty policy to help shield consumers.
