Sandi Toksvig looks at ruffs and red things with Alan Davies, Tom Allen, Susan Calman and Zoe Lyons.

Sandi Toksvig reflects on this and that in an episode themed around reflections, with Alan Davies, Zoe Lyons, Joe Lycett and Liza Tarbuck.

Sandi Toksvig hosts a specially spooky episode of QI with David Mitchell, Richard Osman, Zoe Lyons and Alan Davies.

Sandi Toksvig celebrates the one hundredth birthday of the BBC with Zoe Lyons, Greg James, Richard Osman and Alan Davies.

Sandi is joined by Zoe Lyons, Dan Tiernan, Josh Widdicombe and Alan Davies for an underground and underwater episode of QI.

Rhod Gilbert, Ignacio Lopez and Zoe Lyons join Sandi Toksvig and Alan Davies as QI goes viral.