The show is hosted by comedian
Jimmy Carr and featured two teams consisting of a regular team captain and two celebrity guests each.
Sean Lock appeared as a team captain from series 1 to 18. He was replaced by
Rob Beckett at the beginning of series 19. The opposing captain was originally
Dave Spikey, who left after series 4 and was replaced by
Jason Manford. Manford departed following series 10 and was replaced by
Jon Richardson for series 11 to 18. From series 19 to 20, the opposing captain was
Aisling Bea. However,
Katherine Ryan joined as the opposing team captain in series 22. The original format was filmed the day before broadcast with a live studio audience at
BBC Television Centre. The captains are joined by two celebrities and occasionally a guest captain would substitute. Often, topical celebrities appear on the show, for example
Ruth Badger following her appearance on
The Apprentice. The format was changed for the move from Channel 4 onto More4 and E4. Shows were then recorded consecutively, and no longer covered topical issues. The two team captains were replaced, but Carr still hosts. A full series was not broadcast in 2015, although two Christmas Specials were filmed and aired on 24 and 30 December 2015. No episodes were broadcast during 2018. The 22nd and final series started on 7 January 2020 and ended on 17 January 2021. ==Rounds==