Career: After attending Birmingham University, Tarrant wrote a series of letters to TV companies which stated "I am the face of the 1970s and you should snap me up now". Eventually he landed a reporting job on ATV, before presenting Saturday morning children's show Tiswas from 1974 until 1981. In the 1980s he took on some entertainment slots on TV-am and began a long career as a DJ with London's Capital FM. Small-screen work has included his own show, Tarrant on TV, The Main Event, Man O Man, and of course, Who Wants to Be a Millionaire?, which became a global phenomenon. He has recently branched out into documentaries with Chris Tarrant - Extreme Railways, and Chris Tarrant Goes Fishing.

Career: In 2006, he joined boy band UFO. In 2008, they auditioned for The X Factor but had to change their name because it was already being used by another group. They decided on JLS and they ended up reaching the final of the talent show, losing out to eventual winner Alexandra Burke. JLS went on to sign a record contract with Epic Records and released their debut album in November 2009. It was a huge success and went on to sell more than 1.4million copies. They released a further three albums and a greatest hits collection before deciding to call it a day. Their final concert was at the 02 arena in London on December 22, 2013. Away from JLS, Gill has competed on Celebrity MasterChef. In early 2015, he was a contestant on Channel 4 reality series The Jump.

Career: In 2006, Williams began putting together his own boy band, UFO, who later changed their name to JLS. His big break came in 2008, when JLS came second to Alexandra Burke on the fifth series of The X Factor. Their first two singles went to number one in the UK. JLS released their self-titled debut album in November 2009, and went on to release three further studio albums and a greatest hits album. In April 2013, they announced they were splitting up. They sold more than 10 million records worldwide. In August 2013, Williams became a contestant on ITV's dancing reality show Stepping Out.

Career: Des was a winger for Northampton Town for three years before turning to entertainment. In the 1950s he appeared across the country in variety shows, and toured with Buddy Holly. In 1963 he was given his own series, The Des O'Connor Show, and has regularly appeared on prime-time TV ever since. Des also had an American TV show in the 1970s, which featured Jack Benny and Liberace, and has a huge following in Canada and Australia. He later co-hosted afternoon show Today with Des and Mel, alongside Melanie Sykes, and had a stint as the presenter of Countdown. More recently he appeared on stage in The Wizard of Oz.

Career: His success as a stand-up was crowned when he won an award at the Edinburgh Fringe Festival. He came to the attention of TV bosses after a stint on the radio. Lee was cast in The Sketch show alongside long-term collaborator Tim Vine. After a short-lived stint presenting They Think It's All Over, Mack and Vine began work on Not Going Out. The series revolves around two friends with opposite backgrounds and personalities, much like the two comics themselves. Mack has recently become a regular on comedy panel shows such as Would I Lie to You? and Have I Got News for You. He also has sell-out tours and best-selling DVDs to his name.

Career: Shrager was head chef at Amhuinnsuidhe Castle until 2002. She became known to TV audiences after appearances on Ladette to Lady and Soapstar Superchef. She has also appeared on the small screen in Rosemary: Queen of the Kitchen, Kitchen Showdown with Rosemary Shrager, and Rosemary Shrager's School for Cooks. She presents the cookery slot on The Alan Titchmarsh Show. In 2012, she was a contestant on I'm a Celebrity... Get Me Out of Here!

Career: Hugo became known to a wider audience when he began appearing on E4 reality TV series Made in Chelsea in 2011. Mostly shot in the West London areas of Belgravia, the Kings Road and Knightsbridge, it follows the lives of young, affluent Chelsea socialites. They can often be found quaffing champagne and partying. His filming commitments were fit around his day job as PR and marketing manager for Bourne Capital, a property investment firm based in Waterloo. He left MIC after appearing in three series.