Gaseous,
The regulations are one thing, and the practicalities are quite another. Gas is funny stuff, and water in it isn't. With high atmospheric moisture and rapid temperature changes, your climate is perfect for condensation in a partially filled storage tank. A fuel tank must be vented carefully, and it must have bottom drains and filters to protect you from anything that might interrupt that loud but comforting sound as you fly.
Please check these things carefully in the storage tank you are considering before you bet everything on it. I am sure it can be done safely, but it requires some consideration.
I would recommend ferrying the gas in simple plastic boating gas tanks, which we have in the States in 5 and 10 gallon sizes at about 10 dollars each. West marine sells many tanks here. I ferried trunkfuls of such gas for my fishing boat, because I am cheap, and marinas in the States charge twice the rate of mogas for the same stuff.
Here is at least one pointer:
http://marinestore.co.uk/Merchant2/m...Code=fueltanks