The average diesel prices have now exceeded 150p per litre for the first time due to the rising costs in biofuel a surge in oil prices and a weaker pound.
The AA said that the average price hit 150,50p on Saturday and slightly dropped to 150.09p on Sunday.
AA fuel price spokesman Luke Bosdet said, “Diesel setting a record of £1.50 a litre isn’t just yet another milestone along a bleak road of pump price increases this year.
“As the workhorse fuel for deliveries and craftspeople who drive to customers, it will likely usher in even higher costs for goods and services.
“Many bigger businesses have insulated themselves against higher fuel costs with a system of surcharges on deliveries.
“If pump prices go up, their customers pay a percentage more for deliveries, and that gets passed on to the consumer.
“However, smaller businesses, particularly in rural areas, have little choice but to charge shoppers and clients directly.
“That strains customer relations and potentially puts jobs and contracts in jeopardy.”