The nation’s most curious quiz show, QI, returns to BBC Two and iPlayer with Series X. The series promises another run of razor-sharp wit, unexpected facts and the very best in comedy talent.

At the helm once again is Sandi Toksvig, joined by Alan Davies, as they lead a brilliant line up of guests through a series of curious questions and Quite Interesting facts. Along the way, they’ll reminisce over Xs and Exes, uncover X Animals, celebrate Xmas, and explore the Xtreme.

The QI XL episodes (14 x 45) will be followed each week by a 30-minute repeat. The series will also include 2 x 30-minute compilation episodes. Across the run, Sandi and Alan will be joined by:

Maisie Adam

Roisin Conaty

Stevie Martin

Eshaan Akbar

Lucy Cooke

Chris McCausland

Tom Allen

Fatiha El-Ghorri

Lewis MacLeod

Ella Al-Shamahi

Rhod Gilbert

Ross Noble

Angela Barnes

Howard Goodall

Sara Pascoe

Cally Beaton

Sheila Hancock

Blank Peng

Catherine Bohart

Bella Hull

Lucy Porter

Melanie Bracewell

Elis James

Kiri Pritchard-McLean

Jo Brand

Rosie Jones

Lou Sanders

Gyles Brandreth

Nish Kumar

Daniel Sloss

Alex Brooker

LaVoix

Ian Smith

Desiree Burch

Joe Lycett

Laura Smyth

Susan Calman

Zoe Lyons

Phil Wang

Daliso Chaponda

Jamali Maddix

Holly Walsh

Piers Fletcher, QI Series Producer, said: “QI is back, and this year we’re all about the letter X - so if you’ve ever wondered what a xerotic xanthocarp might be then this is the show for you. (It’s a dried banana, but don’t let that put you off.)”

QI Series X will start on the 3 November at 9pm on BBC iPlayer and BBC Two.