Howard Cox, founder of FairFuelUK, said: "Wholesale petrol has been 5p higher than diesel for weeks and yet pump prices remain the same for both fuels. It's clear following the Budget's continuing freeze in duty... those in the fuel supply chain are now returning to type. To unscrupulously fleece motorists, particularly those that fill up with diesel.
"Retailers are not passing on the benefits of lower oil prices... and in some cases are now taking huge 12p per litre margins. That's £5 profit from an average motorist each time they fill up. FairFuelUK supporters are already livid they are paying the highest fuel tax in the EU but this persistent profiteering by retailers, and their maniuplative 'rocket and feather' pricing tactics, is making UK driver even more incandescent with rage."