for the marinas. As long as we were all getting cheapish diesel, compared to road users, no-one really cared very much about the retail mark-up. Now it's all going to become more transparent. Interesting times ahead.
By the time the marina staff had faffed around arriving at the fuel berth, unlocking the pump, taking payment and then returning to the office to get change (no, I wasn't going to let them keep it out of a £20 note to fill a 25l can, despite the hopeful look)and wandered back, I have always found it easier to fill up at a garage on the way to / from the boat.
I appreciate its not much use if you have a mobo or no local garage selling red.