Diesel pump prices are set to reach a new all-time high this weekend, with average prices at 198.32p per litre—just below the previous record of 199.09p set four years ago. The surge is driven by the Iran war's impact on global oil markets, combined with concerns that a potential US export ban on diesel could worsen the situation. This is particularly significant for British motorists already facing a difficult winter, with energy bills expected to rise sharply in January and interest rates under pressure.

The cost of a full 55-litre tank now reaches approximately £109, with petrol also climbing to 173.6p—its highest level in over four years. Since the Iran conflict began on 28 February, diesel has risen 55p and petrol has increased 40p per litre. Oil prices remain around $106 per barrel, with analysts warning that prices are unlikely to fall without a diplomatic resolution between the US and Iran, leaving drivers with no prospect of relief in the near term.