Hi Dave. Are you still in Swindon RC?
Jaded has some experience of TV, and that is probably the key; that, or a running feature in a cycling magazine, but they all seem to be focused on racing (the Comic) or bloody sportives (C+). How do the round the world guys pay for it?
I think your best hope of sponsorship is a cycling kit manufacturer (or several; jersey sponsorship is possible from five or six) as the record is not as impressive to non-cyclists. Most road clubs manage to get some sponsorship here and there.
I agree that it is incredibly hard to maintain the daily average in the face of illness and other commitments, but those of us who've ridden with Teethgrinder know that he is not human. He broke his handlebars trying to get up Smalldean Lane in the Chilterns on 86" fixed. Unperturbed, he used his light clamp to hold the bar together and continued to London. He doesn't often use trains because it's too much hassle to work out the timetable and buy a ticket, so he just rides instead. He strips food tables bare like a swarm of locusts. He has been seen riding a mountain bike that looks like, and weighs about the same as, a Harley-Davidson.