| Name | Character | Episodes |
|---|---|---|
| Romola Garai | Zoe Atkins | 26 |
| David Walliams | Jake Plaskow | 26 |
| Claudia Harrison | Lucy Jennings | 26 |
| Iddo Goldberg | Brandon Dyer | 26 |
| Andrew Sachs | Murray Plaskow | 26 |
| William Beck | Reece Wilson | 26 |
| Amanda Ryan | Sophie Moore | 26 |
| Sally Rogers | Yvonne Harper | 26 |
| Poppy Miller | Fran Chapel | 26 |
| William Gaminara | Will Newman | 26 |
| Karl Shiels | Patrick Deely | 16 |
| Indra Ové | Tyler Clarkson | 6 |
| Sally Edwards | Maxine | 6 |
| Julia-Lee Smith | Kerry | 6 |
| Razaaq Adoti | Olly | 5 |
| Indira Varma | Sacha | 4 |
| Michael Fenton Stevens | Tim | 3 |
| Janine Wood | Carol | 2 |
| Rebecca Gethings | Ruth | 2 |
| Indira Varma | Sasha | 1 |
| Felicity Dean | Alice | 1 |
| Paula Jacobs | Rosa | 1 |
| Shelley Conn | Carrie Knowles | 1 |
| Chloe Bailey | Jessica | 1 |
| Leo Bill | Matt | 1 |
| Lynn Farleigh | Dr Heather Green | 1 |
| Craig Parkinson | Darren | 1 |
| Angus Wright | Ed Viner | 1 |
| Amelia Bullmore | Lin | 1 |
| Nabil Elouahabi | Kev | 1 |
| Judi Shekoni | Sue | 1 |
| Nigel Hastings | Andrew Jefferson | 1 |
| Steve Money | Fat Chas | 1 |
| Stuart Bowman | Steve | 1 |
| James Barriscale | Danny McCowan | 1 |
| Caroline Loncq | Charlotte Webster | 1 |
| Andrew Buckley | Tad | 1 |
| Myriam Acharki | Kitten | 1 |
| Kenneth Hadley | Dick Wallace | 1 |
| David Sibley | Joe Walsh | 1 |
| Gerrard McArthur | Kieran | 1 |
| Tom Turner | Simon | 1 |
| Amber Sealey | Teri McLean | 1 |
| Andy Pointon | Joel | 1 |
| David Crow | Phil | 1 |
| Natasha Cashman | Rebecca | 1 |