A later start today, so before I left for work there was time to say hello to the marina swan, and top up the water tank. I was also able to confirm that the boat test planned for tomorrow is going ahead, so I'll be back on board again tonight.
I couldn't face the drive down the M1 again, so decided to get the train from Wovlverton. The route passes and crosses the Grand Union several times. I saw it at Old Linslade, Grove Lock, and Berkhamsted among other places.