Andy Parsons (born 1967) is an English comedian and writer, who regularly appears on Mock the Week. With comedy partner Henry Naylor, he has written and presented nine seasons of Parsons and Naylor’s Pull-Out Sections for BBC Radio 2.

Parsons was born in Dorset. He attended Parc Eglos Primary School and Helston Comprehensive School (Cornwall), and Churston Ferrers Grammar School, Torbay (Devon) before going to Christ's College, Cambridge to study Law, where he met and former a double act with Henry Naylor which twice toured with the National Student Theatre Company and once with the Footlights. After completing his studies, Parsons got a job working as a legal clerk on a case at the Greenock shipyards, which he describes as "the most tedious thing I'd ever done." With Naylor he established TBA, London's first sketch comedy club.

His first TV writing job was for Spitting Image and he went on to become one of the main writers. He has also appeared as a guest on They Think It's All Over, QI, and BBC Radio 5 Live's Fighting Talk. He has missed only five episodes of Mock the Week and became a regular panellist at the beginning of Series 3. He, like the other regular panellists on Mock the Week, keeps the same seat throughout the series, Parsons being the one to the left of the host Dara Ó Briain.

Clive Anderson (born 10 December 1952) is a British former barrister, best known for being a comedy writer as well as a radio and television presenter in the United Kingdom. Winner of a British Comedy Award in 1991, Anderson began his success during his 15-year law career with stand-up comedy and comedic script writing, before starring in Whose Line Is It Anyway? on BBC Radio 4, then later, Channel 4. He was also successful with a number of radio programmes, television interviews and guest appearances on Have I Got News for You, Mock the Week, QI and The Bubble.

Anderson was educated at Stanburn Primary School and Harrow County School for Boys in London, where his group of friends included Geoffrey Perkins and Michael Portillo. His Scottish father was manager of the Midland Bank's Wembley branch. Anderson attended Selwyn College, Cambridge where, from 1974 to 1975, he was President of Footlights. He was called to the bar at the Middle Temple in 1976 and became a practising barrister, specialising in criminal law.

Sean Lock (born 22 April 1963) is an English comedian and actor. He began his comedy career as a stand-up comedian. He won the British Comedy Award in 2000 in the category of Best Live Comic, and was nominated for the Perrier Comedy Award. He is also well known for his appearances on television and radio. He has written material for such comics as Bill Bailey, Lee Evans and Mark Lamarr and was voted the 55th greatest stand-up comic on Channel 4's 100 Greatest Stand-Ups in 2007 and again in the updated 2010 list as the 25th greatest stand-up comic.

Lock was born in Chertsey, Surrey.. He attended St. John the Baptist Secondary School, Woking. Prior to becoming a comedian, he was a labourer on building sites. During this time, he developed skin cancer. His first television appearance was in 1993, when he appeared in a supporting role alongside Rob Newman and David Baddiel in their TV show Newman and Baddiel in Pieces. He toured with the duo as their support act, and, as a result, became the first comedian to perform at Wembley Arena. Newman and Baddiel were widely promoted as being the first comedians to have performed at Wembley but, in his capacity as their warm-up, Lock technically takes this honour. However, Lock has conceded the honour to the duo on several occasions, including on the BBC Radio 4 show Loose Ends. In 1995, Lock played an escaped murderer in an episode of The World of Lee Evans, alongside Lee Evans and Phil Daniels.

Francis Martin Patrick "Frankie" Boyle (born 16 August 1972) is a Scottish comedian and writer, well known for his pessimistic, often controversial sense of humour. He was a permanent panellist on Mock the Week for seven series and has made guest appearances on several popular panel shows including Have I Got News for You, 8 Out of 10 Cats, Would I Lie to You?, You Have Been Watching, Never Mind the Buzzcocks (as guest host and team captain when Phill Jupitus was unavailable for recording) and Argumental, as well as writing for Jimmy Carr's show Distraction and Sean Lock's TV Heaven, Telly Hell.

Boyle was born and brought up in Glasgow. After leaving school he attended Aston University for a year before leaving and starting a BA in English at the University of Sussex. Whilst doing a teacher-training course in Edinburgh at the age of 23, he began doing stand-up routines. He got his big break after performing at The Stand Comedy Club in Edinburgh, a venue that has also helped launch the careers of Stewart Lee, Johnny Vegas, Dara Ó Briain and Michael McIntyre.

Matthew Richard "Matt" Lucas (born 5 March 1974) is an English comedian, screenwriter, singer, and actor best known for his acclaimed work with David Walliams in the television show Little Britain; as well as for his portrayals of the scorekeeping baby George Dawes in the comedy panel game Shooting Stars, Tweedledee and Tweedledum in Alice in Wonderland, and the roguish innkeeper Thénardier in the musical Les Misérables.

In May 2007, he was placed seventh in the list of the UK's 100 most influential gay men and women, by British newspaper The Independent.

Lucas was born in Paddington, London, the son of Diana (née Williams) and John Stanley Lucas (1944–1996), who ran a chauffeuring business. Lucas was raised in an observant Jewish family, with some of his British-born mother's family having fled Nazi Germany. His family were members of Edgware and District Reform Synagogue. Lucas grew up in Stanmore, Middlesex; he has an older brother, Howard. He has had alopecia since his childhood, which in interviews he has inconsistently attributed to various events, including a delayed reaction to a car accident at the age of four. He lost all of his hair when he was six years old. Lucas' father died of a heart attack aged 52, in Brent, Greater London.