David Cameron has played down the possibility of a "fair fuel stabiliser" to limit fuel duty rises - amid calls from business groups to introduce one.
The PM said he had asked the Treasury to look at the mechanism which would cut fuel duty when oil prices rise and increase it when prices fall.
But he told the BBC: "I don't want to raise people's hopes too far because it is a difficult issue."
The Federation of Small Businesses says the government has "failed to deliver".
http://www.bbc.co.uk/news/uk-12144966