You've probably seen Scottish actor Alan on the silver screen in films such as X-Men and Goldeneye. He has also appeared in Eyes Wide Shut and Spice World.
Sugababes are a BRIT award-winning British pop group trio from London. They have been named the most successful all-female UK act of the 21st century.
Ex-SAS soldier Andy McNab is a bit of a man of mystery such is the stealth nature of his former job. What we do know is that as well as being hard-as-nails, Andy is a successful writer, bursting onto the literary scene in 1993 with the very successful 'Bravo Two Zero', which dealt with his time in the Gulf War.
Brian, a well-known British art critic, is famous for delivering his caustic remarks in a plummy-voiced tone. He has been writing for The Evening Standard for more than 20 years.
Chris Moyles is the UK's biggest shock jock and host of Radio 1's 'The Chris Moyles Breakfast Show'. Self proclaimed 'saviour of Radio 1', you can also catch Chris presenting the odd TV show.
Actress, star of the West End and TV presenter, Denise has first came to our attention on The Big Breakfast. Since then she has stared in Chicago, Where The Heart Is and Love, Honour and Obey.
An ex-striker with Arsenal and Crystal Palace Ian has since turned his hand to presenting and fronts programmes such as Friends Like These and The Wright Stuff.
She survived foul creepy crawlies and one or two snakes on the other side of the world on in 'I'm a Celeb...' and she's faced up to the man who put the 'F' in chef. It's the one and only Janet Street-Porter.
Deadpan comedian Jimmy Carr rose to fame when he began taking his stand-up routine to Edinburgh and won Best Live Stand Up at the British comedy award in 2006. He is now well known for his work on television.
Joan Rivers - a comedienne, bestselling author, Tony-nominated actress, playwright, screenwriter, motion picture director, columnist, lecturer, syndicated radio host, Emmy Award-winning television talk-show host, jewellery designer, red-carpet fashion laureate and businesswoman.
Although best known for his punditry on Channel 4 racing, his stint on 2005's Celebrity Big Brother was unforgettable. Who didn't guffaw at his infamous Coke-gate incident as well as his, ahem, oversized pants?
Kate Lawler is a former winner of Big Brother. Since leaving the House in 2002 Kate has turned her hand to modelling, DJing, TV presenting and even a bit of stand up comedy.
Lemon, a businessman who enjoyed some success in the 1990s, is an alter ego of the comedian Leigh Francis of Bo' Selecta! fame.
Kelly is the daughter of Ozzy and Sharon Osbourne and first came to our attention during a documentry series about her family's life. Since then she has had a successful music career and presented a number of television programmes.
Craig David is another alter ego of the multi-talented Leigh Francis. Never without his sidekick plastic kestrel Kes, Craig is best known for his stints on Bo' Selecta and he's sure to bring mayhem to the Big Brother House. It'll be proper bo' I tell thee!
Mackenzie shot to fame as Gareth Keenan, the quirky geek with a funny haircut in the TV hit comedy 'The Office' in 2001. Since then his career has gone from strength to strength with Mackenzie joining the Hollywood elite. He's now perhaps best known for his character Ragetti in the 'Pirates of the Caribbean' trilogy.
Malcolm McLaren is best known for being the ex-manager of the punk legends, The Sex Pistols. He also ran a clothing shop called SEX with fashion designer Vivienne Westwood.
Mat and James are our intrepid Big Brother's Big Mouth presenters. Mat Horne has appeared on shows such as Catherine Tate and James Cordon is the star of Gavin and Stacy.
You may have spotted Matt in programmes such as Little Britain and as Toad in the adaptation of The Wind in the Willows.
Nicole Appleton and Melanie Blatt make up half of the recently reunited All Saints line-up
Peaches Geldof is the daughter of Bob Geldof and a former Big Brother's Big Mouth presenter. Fifi Brown is Peaches' friend and DJ partner. Together they are DJ collective 'Trash Pussies'.
Emmy award-winning comedienne Roseanne Barr is best known for her eponymous sitcom, which ran for nine years. She has also appeared in many films and is well known for her outspoken political views.
British radio and television personality, comedian, actor, and newspaper columnist... there's no end to the talents of this former Big Mouth host.
Radio 1 DJ Scott Mills regularly broadcasts to 10 million people! As well as his highly popular drive-time radio show Scott also appears on TV and does a significant amount of voiceover work.
The McQueen Sisters from Hollyoaks are Mercedes McQueen played by Jennifer Metcalfe, Jaqui McQueen played by Claire Cooper and Carmel McQueen played by Gemma Merna
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