A special comedy edition featuring Olga Koch, Chloe Petts, Arabella Weir, Jon Culshaw, Ted Robbins, Justin Moorhouse, Neil Delamere and Loyiso Gola.

A sport edition featuring Steve Backley, Roger Black, Kelly Sotherton, Sally Gunnel, Ashia Hansen, Jo Pavey, Martin Offiah and Gareth Chilcott.

A special celebrity edition featuring Iain Stirling, Marek Larwood, Kitty Scott-Claus, Vanity Milan, Shaparak Khorsandi, Johnny Vegas, Bhavna Limbachia and Victoria Ekanoye.

A special cricket edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman, with contestants Alison Mitchell, Andy Zaltzman, Devon Malcolm, Graham Gooch, Georgie Heath, Fran Wilson, Graeme Swann and Mark Ramprakash.

A special edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman, with contestants Gemma Bissix, Rita Simons, Verona Rose, Bobby Seagull, Cally Beaton, Thanyia Moore, William Hanson and Jordan North.

A soaps edition featuring Louis Emerick, Tristan Gemmill, Natalie Anderson, Anna Nightingale, Kieron Richardson, Kirsty-Leigh Porter, Bobby Davro and Nitin Ganatra.

A special episode featuring broadcasters Arielle Free, Toby Anstis, Sonny Jay, Josie D'Arby, Neev Spencer, Colin Murray, Elis James and John Robins.

A special experts edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman, with contestants Nicky Clarke, Lowri Turner, Dr Milad Shadrooh, Dr Bolu Eso, Jonty Hearnden, Roo Irvine, Amber Butchart and Micaela Sharp.

With Tessa Sanderson, Iwan Thomas, Ray Mears, Laura Lexx, David Tag and Jazmine Franks.

A special music edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of featuring Jake Quickenden, Marcel Somerville, Ben Ofoedu, Jo O'Meara, Carol Decker, Leee John, Celena Cherry and Mariama Goodman.

With Nick Hewer, Katya Jones, Aimee Fuller, Katharine Merry, Michael Whitehall, Alice Dearing, Tom Stade and Athena Kugblenu.

A special BBC Centenary edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman, with contestants Tony Blackburn, Scott Mills, Dr Maggie Aderin-Pocock, Prof Chris Lintott, Peter Purves, Lindsey Russell, Shanequa Paris, Mobeen Azhar and Baroness Floella Benjamin.

A special Christmas edition featuring Aled Jones, Russell Watson, Ben Cohen, Kristina Rihanoff, Kriss Akabusi, Shakira Akabusi, Jamie Laing and Sophie Habboo.

A special edition featuring Tim Key, Alex Horne, Tommy Walsh, Eboni Usoro-Brown, Sharron Davies, Rhea Bailey, Diarmuid Gavin and Natalie Jamieson.

A celebrity special edition featuring Sheila Ferguson, Glenn Moore, Roxy Shahidi, Sonia, Dave Berry, Manish Bhasin, Katherine Dow Blyton and Richie Anderson.

A celebrity special featuring Jo Wood, Brix Smith Start, Ed Gamble, Nish Kumar, Robert Peston, Anita Anand, Mark-Francis Vandelli and Emma Thynn.

A special episode featuring news presenters Cathy Newman, Keme Nzerem, Lucrezia Millarini, Nina Nannar, Mike Bushell, Kasia Madera, Jennie Bond and Nicholas Owen.

A special episode, with comedians Rosie Holt, Nabil Abdulrashid, Shaparak Khorshandi, Mark Steel, Lou Sanders, Luke McQueen, Amy Gledhill and Chris Cantrill.

A celebrity edition of the quiz featuring Tomasz Schafernaker, Owain Wyn Evans, Kerry Godliman, Toussaint Douglass, Nicki Chapman, Kelli Young, Jeremy Edwards and Lucy Dixon.

A celebrity special featuring Lesley Garrett, Penny Lancaster, Noreen Khan, Eshaan Akbar, Laurie Brett, John Partridge, James King and Rosie Millard.

A celebrity special featuring Mari Wilson, Jaki Graham, Ruthie Henshall, Kerry Ellis, Carrie Grant, David Grant, Nicola Stephenson and Charlie Condou.

A celebrity special edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Presented by Alexander Armstrong and co-host Richard Osman, and featuring Chelsee Healey, Anthony Quinlan, Sophie Duker, Jenny Bede, Ugo Monye, Danny Care, Beverley Craven and Patti Boulaye

Special

A special Eurovision edition of the general knowledge quiz, in which four teams try to come up with the answers that no-one else could think of. AJ Odudu, Richie Anderson, Antony Costa, Jay Aston, Eimear Quinn, Linda Martin, Daði Freyr and Måns Zelmerlöw are the contestants.

A celebrity special edition featuring Phil Tufnell, Mark Butcher, Cece Lightfoot, Pooja Shah, Chris McCausland, Sarah Keyworth, Ritchie Neville and Scott Robinson.

A celebrity special edition featuring Annie Wallace, Devon Anderson, Graziano Di Prima, John Thomson, Nathan Bryon, Andrew Hunter Murray, Cariad Lloyd and Alex Murphy.

A celebrity special edition featuring Kaye Adams, Kai Widdrington, Kelly Cates, Jill Douglas, Lucy Porter, Kevin Eldon, Dr Daniel Olaiya and Dr Raphael Olaiya.

A celebrity special edition featuring Catherine Bohart, Charlie Higson, Lindsey Russell, Neil Jones, Kellie Shirley, Danny John Jules, Sukh Ojla and Vikki Stone.

A celebrity special edition featuring Stephen Bailey, Janine Harouni, Tony Way, Ethan Lawrence, Priya Davdra, Kimberly Hart-Simpson, Nabil Abdulrashid and Felicity Ward.

A celebrity special edition featuring Rick Edwards, Emer Kenny, Danny Wallace, Yuriko Kotani, Ian Waite, Vincent Simone, Russ Bray and Deta Hedman.