Just found this:
Duty and tax account for about 75% of the pump price. For example, figure 1 shows the typical breakdown of a litre of unleaded petrol at the average UK major brand pump price of 80.9p (2004 average). Of this, 59.3p is duty and tax,16.3p represents the cost of product and 5.3p is available to the oil company/retailer to cover all the costs of supply from a refinery through to the filling station operation, as well as their profit.
(From here )
So if oil went up 100% from a baseline price of 80.9p a litre it would only put 16.3p on top!!!
Profiteering bastards. It's not as if they don't make huge profits anyway, is it?
btw have been trying to post this for about 30 mins - MN having probs today or is it just me? (I did have to reboot in the end...!)