What happens in Nottingham stays in Nottingham

I am spending the night in Nottingham to give a mathematics seminar tomorrow to the theoretical mechanics group at the University of Nottingham.

I hadn't previously been here, but obviously this is one of the UK cities about which I heard a very long time ago.

It looks like there are things to do in the city (and the castle is supposed to be cool), but the university is a bit away from the main action, I'm not feeling well at all, and I need to go through the draft of a student's report, so any exploration is going to be punted until a subsequent visit.

By the way, since I've been here, I haven't seen any sign of either Robin Hood or his fagelas (except for street names, tourist attractions, etc.).