WOAH! DON'T GO ELECTRIC!!!

i'm not anywhere close to you, but have you considered mixing your own fuel? kerosene (or lamp oil) is very likely to be available. castor. and then the doozy...some ether. Ether is the tough one cause you can't find it in a pure form due to stupid drugs. However, I use something found in a tractor store called John Deere Ether Starting Fluid. Its 80% pure. Works good, with a touch of diesel supplement (cetane booster).

So, the £45 per gallon is quite a hefty price, maybe you can shave a pence (is that right??) by mixing your own? it might be worth the investigating...