By @astronomyblog & @LoveGraphs. Stats last updated 1 May 2016.
It seems there may have been at least 465 shows and 1919 listed appearances. With 4 people per show, iPlayer has 3% more appearances listed than required (and probably a similar percent of people) perhaps due to listing special guests. The host/captains/regulars have included Eric Robson (Host × 333), Peter Gibbs (Host × 128).
Total appearances:
Guest appearances i.e. ignoring the host/captains/regulars:
All people:
Guests i.e. ignoring the host/captains/regulars:
Last updated: 2016/05/01