except when it isn't. Direct comparisons to other countries don't neccessarily tell the full story.
F'r example, petrol in my farflung part of Canada is about $1.15 a litre, thats about 70p at todays exchange rate. Cheap eh? Well perhaps not. As a % of disposable income its proportionately higher than when I was in the UK. Add to that the fact that in North America we don't get fuel efficient small diesels, so the 2002 Nissan Frontier (aka Navarra) doublecab truck I run has a thirsty 3.3V6 rather than a nice 2.8 TD, which means I buy more petrol than I really want to!
Tax on petrol in the UK is a killer to be sure. But who else is the Govt to pay for bailing out the financial system and implementing world class red tape, 'elf and safety & one cctv camera for every man, woman, child of the population?