In their current proposals for a fuel price stabiliser the Tories are stating that the government has a duty to fix the price of petrol so that people can plan ahead..... sound familiar anyone?
Maybe this can be extended to bread, milk, shoes and so on and we can have a fully socialist command economy.
Of course the implication of the Tories proposal is potentially very expensive, if the price of petrol goes up and people buy less of it it implies a big loss to the exchequer. For all that I am not against a 'modified stabiliser' which includes a fuel tax escalator where the price of fuel does not rise with inflation.
Having fuel duty go down makes, quite frankly, for chaos both for the exchequer (i.e. resources for public spending on vital services) and for the 'price mechanism' (which is supposed to have a role in giving feedback on relative scarcity).