Alexander Armstrong and Richard Osman present a special celebrity writers 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 Germaine Greer and Kathy Lette, Mark Billingham and Val McDermid, Mark Watson and Ian McMillan, and Freya North and Tony Parsons.

Alexander Armstrong and Richard Osman present a special celebrity edition of the quiz that rewards the answers that no-one else could think of. Featuring Anne Diamond and Nick Owen, Jedward, Mark Foster and Kelly Sotherton and Katherine Ryan and Russell Kane.

Richard Arnold, Kate Garraway, Naga Munchetty, Charlie Stayt, Fern Britton, Matthew Wright, Dermot Murnaghan and Natasha Kaplinsky feature in a Morning TV edition.

A celebrity outdoors edition of the quiz presented by Alexander Armstrong and Richard Osman, with contestants including Bill Oddie, Helen Skelton and Radzi Chinyanganya.

Celebrity version of the quiz, with Kate Williams, Adam Hart-Davis, Janina Ramirez, Andrew Graham-Dixon, Ben Willbond, Laurence Rickard, Lars Tharp and Tim Wonnacott.

Alexander Armstrong and Richard Osman present a special celebrity child stars 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 Tyger Drew-Honey and Thomas Turgoose, Lee MacDonald and Erkan Mustafa, Michelle Gayle and Adam Rickitt, Julie Dawn Cole and Mark Lester.

Alexander Armstrong and Richard Osman present a special celebrity FA Cup 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 Eni Aluko and Guy Mowbray, Kevin Kilbane and Mark Chapman, Dan Walker and Mark Lawrenson and Rachel Yankey and Kelly Smith.

Alexander Armstrong and Richard Osman present a special health and fitness edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. With contestants Dr Dawn Harper and Dr Pixie McKenna, Robin Cousins and Rosemary Conley, Iwan Thomas and Katharine Merry, and Dr Chris Steele and Lizzie Webb.

Alexander Armstrong and Richard Osman present a special soap 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 Joe Swash and John Altman, Nick Pickard and Ali Bastian, Victoria Bush and Zaraah Abrahams, and Sharon Maughan and Tina Hobley.

Alexander Armstrong and Richard Osman present a special sport 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 Willie Thorne and Tony Jacklin, Andy Fordham and Deta Hedman, Tessa Sanderson and Derek Redmond, and Nick Easter and Martin Offiah.

A Christmas special featuring Christopher Biggins, Paul Zerdin, Gary Wilmot, Michelle Collins, Debbie McGee, Richard Cadell with Sooty, Faye Tozer and Duncan James.

A writers special featuring Martina Cole, Mark Billingham, Liz Pichon, Nick Sharratt, Juno Dawson, Nadia Shireen, Adam Kay and Ian McMillan.

A music special featuring Lee Thompson, Pauline Black, Steve Brown, Barbara Dickson, Kimberly Wyatt, Cathy Dennis, Heather Small and Steve Hogarth.

A 1990s-themed edition featuring Tamara Beckwith, Saffron Sprackling, Clare Buckfield, John Pickard, Mr Motivator, Diane Youdale, Nick Moran and Vas Blackwood.

With Dianne Buswell, Max George, Sally Phillips, Milton Jones, John Barnes, Dave Beasant, Jodie Kidd and Lisa Snowdon. Featuring a special performance from Paul Heaton and Jacqui Abbott.

A radio-themed edition featuring Johnnie Walker, Sally Boazman, Stuart Maconie, Elizabeth Alker, Scott Mills, Chris Stark, Vick Hope and Harriet Scott.

A special episode featuring impressionists Debra Stephenson, Luke Kempner, Jan Ravens, Ronni Ancona, Rory Bremner, Jess Robinson, Steve Nallon and Josh Berry.

A special episode featuring former child stars, including Adrian Hall, Sally Thomsett and Julie Dawn Cole.

A special stand-up comedy edition of the general knowledge quiz, with Rosie Jones, Miles Jupp, Russell Kane, Lucy Beaumont, Rhys James, Lloyd Griffith, Phil Wang and Sindhu Vee.

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