Commenting of the Office of Fair Trading's announcement that it is to conduct an investigation into UK fuel prices, David Cameron's official spokesman said:
Clearly, the OFT is independent and this is a matter for them.
But if they think that there are problems in the way these markets are functioning and that is having an adverse effect on consumers, then they need to investigate.
The Office of Fair Trading has delighted some by asking for evidence to see if consumers are being ripped off by petrol companies.
The OFT issued a "call for information" today as it looks at whether reductions in the price of crude oil are being passed on to motorists.