I've been keeping an eye on fuel usage all year, I have worked out recently that as an average over all the trips this year it is using about 18 lph. That is across a whole range of use, I.e, gentle trips up rivers, cruising over to Isle of Wight / Southampton etc.
I haven't got times and distances on me at moment, just remember the average but could post if your interested ( probably turn out I've calculated all wrong though and I've used twice as much.

Nice boat though, I think it offers a very usable layout.