Refinery Shortfall Locks Diesel at Record Price

UK produces excess petrol but must import the diesel its 15.1 million vehicles require

Diesel prices reached 199.18 pence per litre this week, exceeding the June 2022 record by a fraction and marking the highest level recorded by the RAC.

The increase of 59 pence per litre since the end of February stems directly from supply disruptions caused by the US-Iran conflict and Russia’s separate diesel export ban. Brent crude now trades near 108 dollars per barrel, up from 73 dollars before the conflict began. These external shocks have raised the cost of filling an average family diesel car to 110 pounds.

Britain’s four refineries produce surplus petrol but fall short on diesel. The country must import the difference to meet demand from 15.1 million diesel vehicles still on the roads. Haulage, agriculture and construction cannot easily switch fuels, so the shortfall passes straight through to transport costs and consumer prices.

This import exposure repeats a structural pattern. Successive governments allowed domestic refining capacity to remain mismatched to actual fuel needs while global supply chains grew more fragile. The result is that distant military actions now translate into immediate domestic cost increases without any domestic buffer.

Retailers and logistics firms have already signalled they will pass the higher fuel costs onward. The RAC notes that pump prices will stay elevated until oil markets stabilise for weeks rather than days. Lower-income households that rely on diesel vans or older cars face the sharpest squeeze.

The same refineries that cannot meet diesel demand continue to export petrol surplus. No rapid adjustment mechanism exists inside the UK to rebalance output toward the fuel actually required by the domestic fleet. This leaves the economy permanently reactive to events in the Middle East and Eastern Europe.

Britain’s transport system now operates with permanent external exposure rather than domestic resilience. Each new conflict simply confirms the cost of that choice.