Well, that's some interesting data we need to acquire. Here's woodland road, weekday afternoon. The van WR5WLP half in the bike lane: university vehicle. One van on the pavement: university vehicle.
From what I see on a day to day basis the majority of the cars parked around the University side of Clifton belong to students
I think we should be thinking of putting more pressure on the universities not to allow students to bring cars to town especially if they live in the surrounding areas, which they usually do.
I'm pretty sure that staff from universities just simply don't bother driving to work if they don't have a permit as they soon come to term with there simply isn't any space to park, which might explain why so many ride motorcycles-)
Later on in the day: same location: university vehicles.
R763FWS and the vehicle behind it are both, presumably in the day to day execution of their work, and forced to park on pavement due to all the students parked nearby.
As for the staff, well, you'd need a staff sticker to park blocking the bike shed, wouldn't you?
More research is needed.