Career: Hailed as the best new stand-up to emerge in a decade, Michael has taken the comedy world by storm. He delivered electrifying sets on both We Are Not Amused (Prince Charles's 60th birthday celebrations on ITV1) and the Royal Variety Performance (BBC One), plus a stand-out performance as host on the first episode of BBC One's Live at the Apollo, leading to the Comedy Roadshow vehicle.

Career: Collins's time on TOWIE has led to appearances on I'm a Celebrity Get Me Out of Here NOW!, This Morning, Loose Women and Celebrity Juice. In 2011, she did a nude shoot for Heat magazine. In January 2014, she was a participant on ITV reality series Splash! In November 2014, she opened her second plus size boutique in Brentwood. In the same month, she had a short-lived stay in the jungle as a contestant on I'm a Celebrity… Get Me Out of Here! In January 2016, she entered the Celebrity Big Brother house.

Career: O Briain's first post-uni job was as a children's TV presenter for RTE. He also began performing stand-up gigs on the Irish comedy circuit. He came to prominence as a team captain on the Irish topical panel show Don't Feed The Gondolas (1998-2000). He then toured heavily, performing across Europe, Asia, Australia and North America. In 2002, O Briain began making appearances on British TV shows. He has hosted the comedy panel game Mock the Week since 2005, and continues to perform stand-up. He took over from Adrian Chiles as the host of The Apprentice: You're Fired! in 2010, but quit in 2014. He has also branched out into maths and science with the series School of Hard Sums and Stargazing Live.

Career: S Club Juniors were all in their early teens and they were originally intended to be a support act for S Club 7, but they soon had a following of their own and began to release records. In 2003, the name of the group changed to S Club 8. They released two albums and appeared as characters on children's TV series I Dream. They split up in early 2005. In 2006, Humes was a member of a group called The TigerLilys, but they disbanded before releasing any material. Her big break came in 2007 when she became a member of girl group the Saturdays, whose members include fellow former S Club 8 member Frankie Bridge. They released their debut album, Chasing Lights, in 2008. Since then, they have released a further three albums and headlined a number of concert tours. Away from singing, Humes has appeared on the BBC Three comedy panel show Sweat the Small Stuff, and presented This Morning alongside her husband, former JLS singer Marvin Humes. In December 2013, she was a contestant on the Strictly Come Dancing Christmas Special.

Career: Kelly was a news reporter before landing a position as a TV researcher for BBC Scotland in 1983. It was not well paid and she worked as a waitress in the evenings to make ends meet. Despite once being told that her Glasgow accent would prevent her from gaining small screen success she joined TV-am as its senior Scottish correspondent in 1985, but didn't become a household name until she became co-host of Good Morning Britain in 1990. She's hosted her own weekday morning show since 1994; it's been known by various titles but is currently called Lorraine. Other projects include a Sky One show, a regular column for The Sun and her own fitness videos, as well as guest hosting Have I Got News For You and The Paul O'Grady Show. She began co-hosting Daybreak with Aled Jones in May 2012.