Diesel prices have hit an all-time high of 199.18p per litre, according to the motoring organisation RAC, as the war in the Middle East continues to push up the cost of fuel.
Petrol prices are also still rising, with a litre currently costing 174.13p.
Over the past seven months, the Iran war has severely disrupted the production and transportation of wholesale oil across the region, causing the price of fuels made from oil to surge.
RAC said diesel prices had entered “uncharted territory” and served as a reminder of “just how exposed the UK is to events occurring far away”.