There has been comment that the motorist has overpaid. Fair enough but there have been a number of occasions when the Government have recinded an increase in tax because of rises in the retail price. If the price had remained lower then it is likely that the tax increase would have remained and raised the price anyway. The Government want a high price because they believe it will reduce consumption. Could all the jumping up and down be because of the loss of additional tax revenues?
I work in the oil industry but the market part is so far removed from me that I have no more knowledge than anyone else.
It strikes me though as a bit hypocritical of the government. IF (and its a big IF) there has been any manipulation, it would lead to a few p per litre (cant see that they could manipulate much more than that, since its a world oil market), then you have the government taking 80p per litre in duty/VAT, and the said gov now vociferously protesting!