Career: During a varied career at the BBC, Vine has been a researcher on Heart of the Matter, a reporter on the Today programme, a political and African correspondent, and an anchor on Newsnight. Since 2006, he has analysed the results on BBC's election night coverage. In 2007, he became the presenter of Panorama and a year later started hosting Points of View. Since October 2008, Vine has shared the hosting role of BBC Two quiz Eggheads with Dermot Murnaghan. He has presented the lunchtime show on Radio 2 since 2003. In August 2015, it was announced that he would be a contestant on Strictly Come Dancing.

Career: Lindsay performed stand-up before turning to acting. Her TV debut came in an episode of The Royle Family in 2000. A year later she made a brief appearance alongside close friend Peter Kay in his cult sitcom Phoenix Nights. A few months on, Lindsay played Shelley Unwin for the first time in Coronation Street, a role she played until 2006. Since then, she has starred in Reggie Perrin, Scott & Bailey, Mount Pleasant, Still Open All Hours and Ordinary Lies.

Career: Vorderman got the Countdown job, the first show broadcast on Channel 4 in 1982. She was initially one of four female presenters, but the other women were gradually phased out, leaving her as Richard Whiteley's co-host. Vorderman was soon in demand as a presenter on other TV shows, appearing on the likes of Tomorrow's World, How 2, Stars and Their Lives and Better Homes, but throughout continued to appear on Countdown. She announced she was leaving the show in 2008, after bosses reportedly asked her to take a 90 per cent pay cut. She has also been involved in a task force to improve numeracy skills in schools, and until July 2014 co-host of ITV's Loose Women.

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.