It's around £5.60 per US gallon from the tanker here in UK depending on how much you buy and airfields up this end are charging around £6.50-£7.00 a gal. Don't know what the pound-dollar exchange rate is at the moment, but it hangs around the $1.55 mark so you can work it out roughly from that.
I have a diesel car and it's around £4.60 a gallon at the mo.
In fact looking at your figures B19 we are paying roughly pound-dollar equivalent, so we are paying around 50% more.