Hi, I noticed that you've reverted the changes I made to Season 21, Episode 2 Upside Down and deleted 2 episodes. Although it looks like the episodes are the same as the XL show listing, they aren't.
For Season 21, the BBC is now premiering QI episodes on iPlayer on the same day as the XL episodes (Friday), then broadcasting on BBC Two on Mondays, so I created an alternate list earlier today to show this change.
Cos