The average price of unleaded petrol has increased by 5p a litre over the past week, with a litre now costing 167.17p, according to the RAC. This marks the largest weekly increase since April.
Diesel prices have also seen a 5p rise, reaching 188.63p per litre. The motoring organisation stated there is "no sign of any relief" for drivers.
Fuel prices have escalated since the US-Israel war with Iran began in late February, with the conflict disrupting crude oil supplies across the Middle East. Brent crude, the global oil benchmark, has returned to $100 a barrel for the first time since July following an escalation of hostilities.
RAC senior policy officer Rod Dennis noted that the 5p per litre increase means the cost of filling a family-sized car has gone up by £2.75 in the last week. He added that wholesale prices are surging due to the average barrel of oil costing $96 over the past week, which is now affecting forecourt prices.