Transport Secretary Grant Shapps has urged drivers to boycott petrol stations who refuse to cut prices.
His call comes after research by the AA found that petrol prices have only fallen by just 2.71p and diesel by a 1.59p since last Chancellor Rishi Sunak's Spring Statement 5p reduction last Wednesday.
“Help us with this," Mr Shapps said. "Shop around so that petrol stations learn that if they don’t pass this on, then they are going to lose business.”