- David Mitchell
- Â Mark Corrigan 54 episodes, 2003-2015
- Robert Webb
- Â Jeremy Usborne 54 episodes, 2003-2015
- Matt King
- Â Super Hans 36 episodes, 2003-2015
- Olivia Colman
- Â Sophie Chapman 33 episodes, 2003-2015
- Neil Fitzmaurice
- Â Jeff Heaney 21 episodes, 2003-2015
- Isy Suttie
- Â Dobby 18 episodes, 2008-2015
- Paterson Joseph
- Â Alan Johnson 17 episodes, 2003-2015
- Sophie Winkleman
- Â Big Suze 10 episodes, 2005-2010
- Jim Howick
- Â Gerard Matthew 8 episodes, 2007-2012
- Rachel Blanchard
- Â Nancy 8 episodes, 2004-2007
- Elizabeth Marmur
- Â Toni 8 episodes, 2003-2004
- Vera Graziadei
- Â Elena 6 episodes, 2009
- Camilla Beeput
- Â Zahra 5 episodes, 2010
- Emily Bruni
- Â Gail Huggins 5 episodes, 2009-2012
- Paul Clayton
- Â Ian Chapman 5 episodes, 2007-2010
- Cariad Lloyd
- Â Megan 5 episodes, 2015
- Catherine Shepherd
- Â April Danecroft 5 episodes, 2004-2015
- Endy McKay
- Â Lisa 4 episodes, 2007-2009
- Danny Babington
- Â Ben 4 episodes, 2010
- Bart Edwards
- Â Joe 4 episodes, 2015
- Eliza L. Bennett
- Â Sarah Corrigan 4 episodes, 2005-2012
- Mathew Baynton
- Â Simon 4 episodes, 2010-2012
- John Hodgkinson
- Â Tony 4 episodes, 2003-2004
- Tim Key
- Â Jerry 3 episodes, 2015
- Charlie Covell
- Â Trish 3 episodes, 2012
- Patrick Kennedy
- Â Neil 3 episodes, 2012
- Liam Noble
- Â Andy 3 episodes, 2005-2012
- Angus Wright
- Â Angus Maynard 3 episodes, 2015
- Dan Tetsell
- Â Robert Grayson 3 episodes, 2012
- Franc Ashman
- Â Molly 2 episodes, 2015
- Cheryl Campbell
- Â Penny Chapman 2 episodes, 2007
- Sonny Muslim
- Â Clean Shirt Boy 2 episodes, 2003-2008
- Dolly Wells
- Â Paula 2 episodes, 2003-2008
- Sandy Walsh
- Â Barbara Bingham 2 episodes, 2003
- Joe Van Moyland
- Â Jamie Chapman 2 episodes, 2007
- Tony Wadham
- Â Pete Preston 2 episodes, 2004-2009
- Keir Charles
- Â Valerie's Brother 1 episode, 2003
- Alice Arnold
- Â Liz Usborne 1 episode, 2003
- Jack Bence
- Â Burglar 1 episode, 2008
- Justin Edwards
- Â Alan 1 episode, 2003
- Robert Harley
- Â Barry 1 episode, 2003
- Dorothy Atkinson
- Â Therapist 1 episode, 2007
- Tom Chadbon
- Â Martin 1 episode, 2008
- Natasha Beaumont
- Â Saz 1 episode, 2008
- Phil Gilbert
- Â Ronnie 1 episode, 2008
- Pethrow Gooden
- Â Actor in Play 1 episode, 2008
- Steve Bennett
- Â Frank 1 episode, 2015
- Nat Jenkins
- Â Lift Guy 1 episode, 2003
- Patrick Driver
- Â Ray Usborne 1 episode, 2003
- Matt Blaize
- Â Band Fan's Friend 1 episode, 2004
- Angus Little
- Â Bungee Jump Instructor 1 episode, 2004
- Josef Altin
- Â Mugger #1 1 episode, 2005
- Surinder Duhra
- Â Psychiatrist 1 episode, 2005
- Katy Brand
- Â Lucy 1 episode, 2007
- James Carlton
- Â Matt Townsend 1 episode, 2007
- Ingrid Oliver
- Â Natalie 1 episode, 2008
- Niky Wardley
- Â Cally 1 episode, 2008
- James Bachman
- Â Role-playing Guy 1 episode, 2008
- Margaret Cabourn-Smith
- Â Speed Dating Coordinator 1 episode, 2008
- Karen Ascoe
- Â Young Mum 1 episode, 2012
- Neil Edmond
- Â Paramedic 1 episode, 2003
- Philip Herbert
- Â Lazerbowl Manager 1 episode, 2003
- Peter Capaldi
- Â Professor Alistair MacLeish 1 episode, 2004
- Jordan Long
- Â Zack 1 episode, 2004
- Meredith MacNeill
- Â Merry 1 episode, 2005
- Eryl Maynard
- Â Isobel 1 episode, 2005
- Shelley Blond
- Â Michelle 1 episode, 2005
- Brodie Bass
- Â Jude 1 episode, 2005
- Cara Horgan
- Â Aurora 1 episode, 2007
- Liz May Brice
- Â Sally Slater 1 episode, 2007
- Agnieszka Liggett
- Â Eva 1 episode, 2007
- Tessa Wyatt
- Â Jackie Usborne 1 episode, 2008
- Jessica Regan
- Â Actress in Play 1 episode, 2008
- Eve Webster
- Â Tara 1 episode, 2008
- Penelope Beaumont
- Â Jan 1 episode, 2009
- Max Brown
- Â Drugs Customer 1 episode, 2009
- Lynn Farleigh
- Â Pam Corrigan 1 episode, 2010
- Jonathan Aris
- Â Ben Prenderghast 1 episode, 2012
- Nadia Cameron-Blakey
- Â Celia 1 episode, 2012
- Josephine Butler
- Â Stephanie 1 episode, 2012
- Adam Byron
- Â Charlie 1 episode, 2012
- Jonathan Harden
- Â Gregory 1 episode, 2015
- Daisy Haggard
- Â Practice Nurse 1 episode, 2003
- Terry Bird
- Â Terry 1 episode, 2004
- Alexia Traverse-Healy
- Â Band Fan 1 episode, 2004
- Kevin Bishop
- Â Ollie 1 episode, 2005
- Rosie Cavaliero
- Â Vicky 1 episode, 2005
- Geoffrey McGivern
- Â Gerard 1 episode, 2005
- Jessica Claire
- Â Hans' Girlfriend 1 episode, 2005
- Francis Magee
- Â Russell Orgazoid 1 episode, 2007
- Stuart McQuarrie
- Â Gym Manager 1 episode, 2007
- Nigel Boyle
- Â JLB Worker 1 episode, 2007
- Tom Knight
- Â Malcolm 1 episode, 2007
- Zac Fox
- Â Barney Chapman 1 episode, 2008
- Justin Brett
- Â Michael 1 episode, 2009
- Philip Brook
- Â Father 1 episode, 2009
- Yasmine Akram
- Â Yana 1 episode, 2010
- Clive Merrison
- Â Dan Corrigan 1 episode, 2010
- Naomi Cooper-Davis
- Â Deena 1 episode, 2012
- Rob Carter
- Â MBA Tutor 1 episode, 2012
- Jiggy Bhore
- Â Mo Gatland 1 episode, 2012
- Simon Harvey
- Â Will 1 episode, 2015
- Tim Preece
- Â Mr. Klugman 1 episode, 2003
- Alexander Kirk
- Â Keith 1 episode, 2003
- Carolyn Pertwee
- Â Davina 1 episode, 2003
- James Holmes
- Â Vegetarian Homeless Man 1 episode, 2004
- Harmage Singh Kalirai
- Â Mr. Rashid 1 episode, 2004
- Tim Faraday
- Â Bouncer 1 episode, 2005
- Lee Long
- Â Kid at Chicken Corner's Mate 1 episode, 2005
- Jay Simpson
- Â Foz 1 episode, 2007
- Ellie Chidzey
- Â Lap Dancer 1 episode, 2007
- Philip Harvey
- Â Vicar 1 episode, 2007
- Alex Lowe
- Â Edwin Pascoe 1 episode, 2008
- Rufus Jones
- Â Peter 1 episode, 2009
- Jasper Jacob
- Â Colin 1 episode, 2009
- Will Beer
- Â Driving Instructor 1 episode, 2009
- Michele Austin
- Â Midwife 1 episode, 2010
- Jamie Deeks
- Â Taxi Driver 1 episode, 2010
- Tim Downie
- Â Greg 1 episode, 2012
- Cally Lawrence
- Â Ticket Inspector 1 episode, 2012
- India Fisher
- Â Katie Matthew 1 episode, 2012
- Simon Meacock
- Â Wadey 1 episode, 2015
- Kyl Messios
- Â Valerie's Brother's Friend 1 episode, 2003
- Sarah Hadland
- Â Karen 1 episode, 2004
- Trevor Laird
- Â Laurie 1 episode, 2004
- David Armand
- Â Rejected Dancer 1 episode, 2004
- Logan Murray
- Â Shoe Shop Manager 1 episode, 2004
- Mark Wakeling
- Â Stu 1 episode, 2005
- Kevin Heaney
- Â Male Juror 1 episode, 2005
- Colin Mace
- Â Motorist 1 episode, 2007
- Sarah Niles
- Â Cashier 1 episode, 2008
- Susannah Wise
- Â Heather 1 episode, 2008
- Robert Popper
- Â Annoying Man 1 episode, 2009
- Mark Kempner
- Â Driving Test Examiner 1 episode, 2009
- Jack Doolan
- Â Door-to-door Seller 1 episode, 2010
- David Fynn
- Â Games Shop Assistant 1 episode, 2010
- Lorraine Brunning
- Â Receptionist Nurse 1 episode, 2010
- Bradley Hall
- Â Local Youth 1 episode, 2012
- Matt Garrill
- Â Hugh 1 episode, 2012
- Sandra Reid
- Â Sara 1 episode, 2012
- David Evans
- Â Joshy Corrigan 1 episode, 2012
- Conor MacNeill
- Â Clerk 1 episode, 2015
- Max Olesker
- Â Aaron 1 episode, 2015
- Michael Wildman
- Â Band Member 1 episode, 2003
- Flora Newbigin
- Â Valerie 1 episode, 2003
- Jenny Howe
- Â Registrar 1 episode, 2004
- Stephen Beresford
- Â Dancer 1 episode, 2004
- Ashley Barker
- Â WWII Re-Enactment Officer 1 episode, 2004
- Tadeusz Pasternak
- Â Nim 1 episode, 2004
- Simon Lowe
- Â Dom 1 episode, 2005
- Jack Warren
- Â Kid at Chicken Corner 1 episode, 2005
- Scarlett Sabet
- Â Fertility Clinic Nurse 1 episode, 2008
- Dylan Edwards
- Â Video Arcade Oddball 1 episode, 2010
- Rakhee Thakrar
- Â Waitress 1 episode, 2012
- Huw Higginson
- Â Dave Franks 1 episode, 2012
- Jo Halpin
- Â Receptionist 1 episode, 2012
- Kitty Martin
- Â Baker 1 episode, 2015
- Steve Edge
- Â Darryl 1 episode, 2004
- Cathryn Bradshaw
- Â Dance Class Leader 1 episode, 2004
- Eddie Hutton-Mills
- Â Wedding Reception DJ 1 episode, 2004
- Alex Macqueen
- Â Jury Foreman 1 episode, 2005
- Morgan Watkins
- Â Mugger #2 1 episode, 2005
- Leanne Wilson
- Â Cafe Girl 1 episode, 2007
- Finn Sivertsen
- Â JLB Executive 1 episode, 2007
- Sari Sheehan
- Â Lindsey 1 episode, 2008
- Robert Cambrinus
- Â Steffan Strauss 1 episode, 2009
- Ashley George
- Â Fast Food Server 1 episode, 2010
- Jake Harders
- Â Suze's Party Guest 1 episode, 2010
- Graham Padden
- Â Dr. Bendix 1 episode, 2012
- Tim Steed
- Â Sam 1 episode, 2004
- Alan Westaway
- Â Gwyn 1 episode, 2004
- Adam G. Goodwin
- Â Studio Technician 1 episode, 2004
- Wendy Meredith
- Â Female Juror 1 episode, 2005
- Douglas McFerran
- Â Security Guard 1 episode, 2009
- Daniel Ings
- Â Doctor 1 episode, 2010
- Kanako Nakano
- Â Yoko 1 episode, 2010
- George Potts
- Â Alan McGurnagee 1 episode, 2012
- Gareth Tunley
- Â Gog 1 episode, 2004
- Tracy Whitwell
- Â Carla 1 episode, 2005
- Frog Stone
- Â Maternity Theatre Nurse 1 episode, 2010
- Richard Sandling
- Â Raymond 1 episode, 2010
- Georgia Zaris
- Â Laura 1 episode, 2005
- Marcus Garvey
- Â Party Crasher 1 episode, 2009
- Stevee Davies
- Â Drugs Customer 1 episode, 2009
- Laura Jean Marsh
- Â Alice 1 episode, 2012
- Jesse Armstrong
- Â Man in Gog's film / ... (uncredited) 2 episodes, 2003-2004
- Chris Wilson
- Â Funeral Guest / ... (uncredited) 2 episodes, 2008-2012
- Philip Clarke
- Â Man outside Off-Licence (uncredited) 1 episode, 2003
- Jill Goldston
- Â Dancer (uncredited) 1 episode, 2004
- John Warman
- Â Alcoholic (uncredited) 1 episode, 2004
- Jessica Goodman
- Â Nurse behind desk at hospital (uncredited) 1 episode, 2004
- Martin Stirling
- Â Gay Clubber (uncredited) 1 episode, 2005
- Steve Munroe
- Â Church Warden (uncredited) 1 episode, 2007
- Drew P.
- Â School Friend (uncredited) 1 episode, 2007
- Rishi Doshi
- (uncredited) 1 episode, 2007
- Kirsty Seager
- Â Festival Atendee (uncredited) 1 episode, 2008
- Emily Jardine
- Â Woman at Gig (uncredited) 1 episode, 2008
- Alex Prentice
- Â Super Hans & Jeremy's Bandmate (uncredited) 1 episode, 2008
- Anthony Berlingeri
- Â Jacked Jim (uncredited) 1 episode, 2009
- Rudy Valentino Grant
- Â Off Licence owner (uncredited) 1 episode, 2010
- Aatif Nawaz
- Â Elvis (uncredited) 1 episode, 2010
- Tom Basden
- Â Customer (uncredited) 1 episode, 2012
- Paul Warren
- Â Supply Teacher (uncredited) 1 episode, 2012
- Craig Izzard
- Â Five-a-side player (uncredited) 1 episode, 2012
- Joanna Jeffrees
- Â Female Job Candidate (uncredited) 1 episode, 2012
- Lasco Atkins
- Â Guest (uncredited) 1 episode, 2015
- Samantha Pearl
- Â Receptionist (uncredited) 1 episode, 2015
- Tom Leefarr Smith
- Â Waiter (uncredited) 1 episode, 2015