Fleabay is your friend! This week, there was a (ford cargo?) bowser with pump/meter etc for jet A1 with residual tank contents....there was also a static tank, again for diesel/avtur.
you often see these items and also small towed trailer-type bowsers.
Avgas is far more tricky to store/dispense, due to it's flammability.
Getting a licensed petroleum store license is not easy....IIRC. you're allowed a maximum of~ 50 litres to be stored at home PROVIDED the fuel is split into the correct number of regulation containers,in the correct store. a couple of jerry-cansin the garden shed is a real no-no.
derv/paraffin/kerosene/avtur/jetA1 have none of these restrictions,
afaik.
Get a central-heating oil tank, bunker it off site and bring it to the aircraft on an "as needed" basis.
Don't forget to smile sweetly and thank him for the BIG favour he's done you by making you go direct to distributor and saving a goodly margin.
Don't hold out hopes of a curteous reply, though
