The Prime Minister's official spokesperson was asked whether the PM was disappointed at the Office of Fair Trading's report into fuel prices.
She said it was for the OFT to look at the issue, adding that they have made it clear that if there is further evidence of alleged price fixing, they will look into it and take action.
But for now, the Department of Energy and Climate Change is considering its response to the OFT's report.
Despite enormous price rises in the last few years, an Office of Fair Trading report into the UK's fuel market found it is 'working well'.
Pump prices are rising yet again. The wholesale cost has risen almost seven per cent since Christmas alone. Now they want answers.