Career: Armstrong made his film and TV debuts in 1994 in There's No Business and A Breed of Heroes. He was introduced to Ben Miller in 1996 and their subsequent success at the Edinburgh Festival Fringe led to their first sketch series in 1997; they've worked together a number of times since on various projects. Armstrong played the lead in short-lived sitcom Beast. He has also appeared in Birthday Girl (2001), I Saw You, TLC, Saxondale, Life Begins, The Trial of Tony Blair, Mutual Friends, Woody Allen's Match Point (2005) and Scoop (2006). Armstrong was the voice of supercomputer Mr Smith in The Sarah Jane Adventures, appeared in the 2011 Doctor Who Christmas Special and has presented the BBC game show Pointless since 2009. In recent years, he has also voiced Danger Mouse in the revival of the animated series and presented Rome's Invisible City, Land of the Midnight Sun and Don't Ask Me Ask Britain.

Career: Osman has worked behind the scenes as an executive producer on a number of TV programmes, including Deal or No Deal, 8 Out of 10 Cats, and 10 O'Clock Live. As the UK creative director of TV production company Endemol, he pitched the quiz Pointless to the BBC. As a way of explaining the rules, he played the co-host during a run-through. He was asked to do the role for real when the show was commissioned. Pointless started on BBC Two in 2009 and was an immediate hit. It quickly made the switch to BBC One. Since being in the spotlight on Pointless, he has made guest appearances on QI, Have I Got News for You and Would I Lie to You? He also guest presented an episode of The One Show alongside Alex Jones.

Career: After hospital radio, Culshaw served his media apprenticeship as a DJ at several commercial stations, but rose to fame in January 1998 during his time at Capital Radio when his phone call got put through to then-prime minister Tony Blair while impersonating Tory leader of the time William Hague. The two had a lengthy conversation before the penny dropped. Between 2001 and 2002 he had a programme on ITV called Alter Ego where he interviewed male celebrities in their own style of speaking. On ITV he also appeared on 2DTV, then The Impressionable Jon Culshaw, before finding his real niche with the BBC series Dead Ringers. He took part in Celebrity Fame Academy in 2005, where he met Debra Stephenson, with whom he starred in The Impressions Show.

Career: Weir's big break came in 1994 when she began playing various roles in BBC sketch comedy The Fast Show alongside Paul Whitehouse, Charlie Higson and John Thomson. The show had a number of catchphrases and the one mostly attributed to Weir was 'Does My Bum Look Big in This?' She later used this as the title for a best-selling book. The Fast Show ran until 1997 and returned in 2000 for a one-off special. Weir went on to star in Posh Nosh, Hana's Helpline, Skins and Doctor Who. More recently, she has appeared in one-off drama Two Doors Down, Midomer Murders and House of Fools.