Sandi Toksvig considers Wales, whales, and wails with Elis James, Griff Rhys Jones, Kiri Pritchard-McLean and Alan Davies.

Sandi Toksvig takes a look at wings and wheels with Aisling Bea, Hank Green, Desiree Burch and Alan Davies.

Sandi and Alan take a look at some weaponry with Nish Kumar, Lou Sanders and Roisin Conaty.

Sandi Toksvig has a wavey episode of QI with Phil Wang, Sara Pascoe, Tom Allen and Alan Davies.

Sandi Toksvig takes a QI look at the Wild West with Alex Brooker, Jo Brand, Eshaan Akbar and Alan Davies.

Sandi Toksvig goes a-wooing with Rosie Jones, Larry Dean, Maisie Adam and Alan Davies.

Sandi Toksvig wonders who, what and why with Daliso Chaponda, Susan Calman, Cariad Lloyd and Alan Davies.

Sandi Toksvig has a weird and wonderful episode of QI featuring Melanie Bracewell, Patrick Kielty, Roisin Conaty and Alan Davies.

Julian Clary, Fatiha El-Ghorri, Jimmy Carr and Alan Davies visit Sandi Toksvig's winter wonderland for the QI Christmas special.