Sean Lock Lock took part in "Channel 4's Comedy Gala", a benefit show held in aid of Great Ormond Street Children's Hospital, filmed live at the O2 Arena. He has also appeared in a spoof video produced by Shelter, the housing charity, to highlight the problem of rogue landlords. In 2011, Sean Lock took over from John Sergeant as the host of the Dave comedy panel show, "Argumental". Sean Lock has also been a team captain on "8 Out of 10 Cats (2005–2015)" and "8 Out of 10 Cats Does Countdown" (2012–Present). Sean Lock Sean Lock (born 22 April 1963) is an
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,