"You could even get a load of duty free fags and chain smoke all the way back throwing the butts in amongst the jerry cans."
...and turn on the factory installed O2 on maximum whilst taking a drag on a big cigar...

for maximum fireball effect.
I reckon I could defuel 400L per trip, six trips and my (2200L) bowser would be full, BUT I would also pay £72 in landing fees at EGJJ and use £358.34 worth of AVGAS in the process. Plus wear and tear on A/C etc...
Now if CI fuel is £0.79 per litre with AOPA discount and the price in Plymouth is £1.02 +Vat then the saving on 2200L would be £899 so subtracting the £358.34 and £72 I would only be £468.66 better off. I reckon I could do it in a day but quite honestly it would be risky and I would far rather have a big tanker come out to my bowser and top it up!
Hmmm....now if I had an RAF tanker aircraft it might be worthwhile, shall we have a show of hands and a whip-round?
SB