Sandi Toksvig takes a QI look at some visionaries with Cally Beaton, Nish Kumar, Laura Smyth and Alan Davies.

Sandi Toksvig hosts the QI Christmas special and is joined by Gyles Brandreth, Lulu, Emmanuel Sonubi and Alan Davies.

Sandi Toksvig hosts as QI goes voyaging with Nabil Abdulrashid, Joe Lycett, Lou Sanders, and Alan Davies.

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

Sandi Toksvig hosts a very varied episode, joined by panellists Ross Noble, Sara Pascoe, Sally Phillips and Alan Davies.

Sandi Toksvig takes a look at veggies with Jason Manford, Ahir Shah, Holly Walsh and Alan Davies.

Sandi Toksvig presents a visual episode of QI with Maisie Adam, Jack Dee, Kiri Pritchard-McLean and Alan Davies.

Sandi Toksvig and Alan Davies are joined by Neil Delamere, Cariad Lloyd and Chris McCausland for a vulgar episode of QI.

Sandi Toksvig hosts a vintage episode of QI with Susan Calman, Rosie Jones, Josh Widdicombe and Alan Davies.

Sandi Toksvig takes a QI look at some vets with Tom Allen, Melanie Bracewell, Desiree Burch and Alan Davies.

Sandi Toksvig presents a volatile episode of QI with Aisling Bea, Mark Watson, Michelle Wolf and Alan Davies.

Sandi Toksvig takes a QI look at vices and virtues with Eshaan Akbar, Jo Brand, Rhys James and Alan Davies.

Sandi Toksvig is in search of victory with Rob Beckett, Daliso Chaponda, Lara Ricote and Alan Davies.

Sandi Toksvig gets vocal with Ed Byrne, Jimmy Carr, Judi Love and Alan Davies.

A selection of the best moments from the V series, hosted by Sandi Toksvig with Alan Davies and their guests.

More of the best moments from the V series, hosted by Sandi Toksvig with Alan Davies and their guests.