Summary: Sandi Toksvig is joined by Eshaan Akbar, Jo Brand, Jimmy Carr, and Alan Davies for a festive special. They'll uncover Santa Claus' whereabouts, why horses make excellent party guests, and why there always seems to be room for Christmas pudding - plus Sandi showcases her super-cool, cutting-edge hidden talent.

Summary: Sandi Toksvig is joined by Aisling Bea, Urzila Carlson, Romesh Ranganathan and Alan Davies for an upside-down episode.

Summary: Sandi Toksvig, Nabil Abdulrashid, Bill Bailey, Victoria Coren Mitchell and Alan Davies are all in it together for this United episode.

Summary: Join Sandi Toksvig for a thoroughly Unsavoury episode of QI, with Gyles Brandreth, Judi Love, Kiri Pritchard-McLean and Alan Davies.

Summary: Sandi Toksvig puts the UK-US special relationship under the microscope with Kemah Bob, Alex Edelman, David Mitchell and Alan Davies.

Summary: Sandi Toksvig presents an ultra-interesting episode of QI with Jordan Gray, Jason Manford, Sara Pascoe and Alan Davies.

Summary: Sandi Toksvig dusts off her tinfoil hat for a look at ufology with Cally Beaton, Nish Kumar, Tom Ward and Alan Davies.

Summary: Sandi Toksvig, Rhod Gilbert, Lara Ricote, Ahir Shah and Alan Davies look at some animals beginning with 'U'.

Summary: Sandi Toksvig looks at a range of unrelated 'U' topics with Tom Allen, Chris McCausland, Lou Sanders and Alan Davies.

Summary: Sandi Toksvig hosts an 'upsadaisy' episode of QI and is joined by Justin Moorhouse, Emmanuel Sonubi, Holly Walsh and Alan Davies.

Summary: Sandi Toksvig is joined by Maisie Adam, Daliso Chaponda, Jack Dee and Alan Davies for a look at some underthings.

Summary: Sandi Toksvig goes to university with Guz Khan, Joe Lycett, Morgana Robinson and Alan Davies.

Summary: Sandi Toksvig takes a look at upbringing with Sally Phillips, Josh Pugh, Aaron Simmonds and Alan Davies.