- David Mitchell
- Â Various / ... 25 episodes, 2006-2010
- Robert Webb
- Â Various / ... 25 episodes, 2006-2010
- James Bachman
- Â Various / ... 25 episodes, 2006-2010
- Mark Evans
- Â Various / ... 24 episodes, 2006-2010
- Sarah Hadland
- Â Various / ... 17 episodes, 2008-2010
- Abigail Burdess
- Â Various / ... 16 episodes, 2006-2010
- Olivia Colman
- Â Julie / ... 13 episodes, 2006-2008
- Paterson Joseph
- Â Simon / ... 8 episodes, 2006-2008
- Toby Davies
- Â Various / ... 8 episodes, 2008-2010
- Gus Brown
- Â Dickie Whittaker / ... 5 episodes, 2006-2008
- Laura Aikman
- Â Various / ... 4 episodes, 2008-2009
- Jo Neary
- Â Ancient Roman in Video / ... 4 episodes, 2008
- Barunka O'Shaughnessy
- Â Michelle / ... 3 episodes, 2008
- Taise Kerr
- Â Little Girl / ... 2 episodes, 2006-2008
- Stewart Scudamore
- Â Various 2 episodes, 2010
- Daniel Kaluuya
- Â Poor Black Kid / ... 2 episodes, 2008-2009
- Terence Maynard
- Â Replacement Speedo Actor / ... 2 episodes, 2008
- Drew Blackall
- Â Various 1 episode, 2010
- Imogen Byron
- Â Girl with Hamster 1 episode, 2008
- Adrian Chiles
- Â Adrian Chiles 1 episode, 2008
- Jonathan Dryden Taylor
- Â Various 1 episode, 2010
- Roger Bunnage
- Â Various 1 episode, 2010
- Danny McEvoy
- Â Various 1 episode, 2008
- Isabella Laughland
- Â Various 1 episode, 2009
- Keeley Hawes
- Â Keeley Hawes 1 episode, 2010
- Togo Igawa
- Â Professor Yashida 1 episode, 2010
- Archie Fitch
- Â Various 1 episode, 2010
- Edna Doré
- Â Heroin Lover's Grandma 1 episode, 2006
- David Cantor
- Â Various 1 episode, 2006
- Rob Madge
- Â Various 1 episode, 2009
- Seroca Davis
- Â Various 1 episode, 2009
- Jack Butcher
- Â Various 1 episode, 2009
- Gyles Brandreth
- Â Gyles Brandreth 1 episode, 2006
- Sally Grace
- Â Heroin Lover's Mum 1 episode, 2006
- Jamie Sweeney
- Â Various 1 episode, 2009
- Hazel Irvine
- Â Hazel Irvine 1 episode, 2009
- Arun Crisp
- Â Various 1 episode, 2006
- Rory Sadler
- Â Actor's Son 1 episode, 2006
- Lorcan Kerr
- Â Various 1 episode, 2006
- Kiran Shah
- Â Kevin Armstrong - The Boy with an Arse for a Face 1 episode, 2008
- Corey J. Smith
- Â Timmy 1 episode, 2008
- Emma Sterling
- Â Various 1 episode, 2008
- Simon John Wilson
- Â Fan / ... (uncredited) 2 episodes, 2006
- David Kerr
- Â Director (uncredited) 1 episode, 2006
- Gareth Edwards
- Â Producer (uncredited) 1 episode, 2006
- Nick Turner
- Â Barman (uncredited) 1 episode, 2006
- Tom Neill
- Â Monk (uncredited) 1 episode, 2006
- Paul Warren
- Â Cricketer (uncredited) 1 episode, 2008
- John Finnemore
- Â Fruitcake Croupier (uncredited) 1 episode, 2009
- Raychel Addo
- Â Dancer (uncredited) 1 episode, 2010