That graph is out of date. Brent oil is currently around US$125 per barrel.
http://www.livecharts.co.uk/MarketCharts/brent.php
The fuel price is determined primarily by the oil price, dollar-sterling exchange rate and tax loaded on by the government. As already pointed out, expensive fuel causes price inflation generally. If fuel wasn't taxed so highly, something else would be taxed more instead.
I'm fortunate in that I live, work and shop within walking distance. That was a deliberate choice. I've always tried to live close to work as I regard commuting as a waste of my time. I appreciate that not everyone can live close to work, but, even 50 years ago, most people did and, going back 100 years, nearly everyone did.
With the country's, and the rest of the Western world's, finances stuffed I don't see any halt to the rise in the cost of fuel. There may be a temporary oil price drop or two along the way, but they will be due to the economy going into reverse. I hope you enjoyed the party whilst it lasted.