Major retailers including the "Big Four" supermarkets have been criticised for failing to cut petrol prices in line with falling wholesale costs.
Tesco, Asda, Morrisons and Sainsbury's all reduced their fuel prices in the last week - but motoring group the RAC claims the cuts are not enough.
RAC figures show the wholesale price of petrol is back down to the levels recorded in early May of 131.75p per litre.
