8 Out of 10 Cats show has to be edited to fit in its 26-minute slot. From series 9 there is a longer version of the show called "8 Out of 10 Cats Uncut", broadcast a few days later. These rounds only featured in series 1 and the "Big Brother" special shows: Since 2012, crossover episodes between "8 Out of 10 Cats" and "Countdown" have aired. The show follows the format of "Countdown", but is hosted by Jimmy Carr, with permanent contestants Sean Lock and Jon Richardson, as well as two other guest contestants. On 4 January 2013, a special episode of "Deal or No
8 Out of 10 Cats Does Countdown and Jon Richardson as permanent team captains (various other personalities, such as Lee Mack, Sarah Millican, Bill Bailey and Claudia Winkleman, deputise when either captain is unavailable to film). Rachel Riley and Susie Dent take up their regular roles from "Countdown"; Joe Wilkinson appears in many earlier episodes as Rachel's assistant and has also stood in as a team captain. The formation of the crossover began as a series of specials, the first of which was conceived on 2 January 2012, when Channel 4 orchestrated a special "mash-up night", merging two shows to form a special edition of the pair,