I can recommend
in Portsmouth*. It worked well for me coming down from North London area, via the M25/A3(M)/A27 and coming of at Eastern Road A2030, then heading a mere 7 minutes to the port from there.
Link

The advantage being, that if you have a highly tuned machine, Tesco RON99 Momentum fuel is probably better than RON98 from elsewhere. You also do get to collect a minuscule amount of Clubcard points in the process.
Why do I bother you might ask?
Well, I roll of the boat, knowing that I have worry free 250 miles (KTM 1290 or indeed a standard 1200/1250 GS, have similar consumption as does 2002 VFR 800) ahead of me, rather than do what most folk do, get off the boat and dive into the first forecourt (with inflated prices) to fill up. I can also use my UK banking or credit card, without incurring any charges or taking €40+ euros out of my abroad spending kitty. The fuel in the UK is also considerably cheaper V France, where it is not unusual to see €1.98+ per/L
*other options available, such as Asda or Shell next to the port.
in Portsmouth*. It worked well for me coming down from North London area, via the M25/A3(M)/A27 and coming of at Eastern Road A2030, then heading a mere 7 minutes to the port from there.Link

The advantage being, that if you have a highly tuned machine, Tesco RON99 Momentum fuel is probably better than RON98 from elsewhere. You also do get to collect a minuscule amount of Clubcard points in the process.
Why do I bother you might ask?
Well, I roll of the boat, knowing that I have worry free 250 miles (KTM 1290 or indeed a standard 1200/1250 GS, have similar consumption as does 2002 VFR 800) ahead of me, rather than do what most folk do, get off the boat and dive into the first forecourt (with inflated prices) to fill up. I can also use my UK banking or credit card, without incurring any charges or taking €40+ euros out of my abroad spending kitty. The fuel in the UK is also considerably cheaper V France, where it is not unusual to see €1.98+ per/L
*other options available, such as Asda or Shell next to the port.


