What about the rest? Remember; the £50 you pay to fill up your car buys £20 of petrol. The other £30 goes straight to the government. They like to blame the oil companies for high prices but the truth is very different. It is the government's avarice.
People who don't like the oil companies should note how the high tax rates work to force out competition to the handful of majors. The government, by squeezing the pips out of petrol sales, drives up the margin, knocking out the marginal suppliers.