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: Kidd began modelling at 16 and almost immediately ran into a storm of protest. Her almost skeletal figure led to accusations she was encouraging an anorexic look; she says she never suffered from the illness. She has dabbled in films, playing minor roles in Mad Cows and Prince Valiant. On TV as a judge on Celebrity Fools On Horses and took part in the 2008 series of Strictly Come Dancing. Kidd also has a passion for motor racing, having held the record celebrity lap time on Top Gear and taken part in the infamous Gumball 3000. She is an excellent horsewoman, an England representative at polo and plays a mean round of golf. In early 2015, she was a participant on Channel 4 reality series The Jump.

Career: Despite being untrained, Fearnley-Whittingstall became a sous chef at the River Cafe, but claims he had to leave because he was too messy. Since then, he's worked as a restaurant critic, but gained fame by hosting A Cook on the Wild Side and TV series Escape to River Cottage in 1999, which focused on his experiences of running a self-sufficient smallholding in Dorset. It also showcased his love of using ingredients growing naturally in the countryside. He's hosted several spin-off series, including TV Dinners, The River Cottage Treatment, and Treats from the Edwardian Country House. He has his own production company and spearheaded a campaign to highlight the maltreatment of animals, particularly chickens.

Career: After college she went into modelling, spending 15 months in Japan and 18 months in London. She later became a motor sports correspondent, reporting on motorcycle racing for BBC News. She also appeared on other sports-related programmes, including Wimbledon, The Boat Race, The London Marathon, Royal Ascot and The Great North Run. Perry appeared on the 2002-2003 revival of Treasure Hunt, where she took the 'sky runner' role made famous by Anneka Rice. She also helped to present the 2004 Olympics in Athens. Her other programmes include Housecall, Superstars, City Hospital and Holiday, although she's now best known for The Gadget Show.