| Name | Character | Episodes |
|---|---|---|
| Hannah John-Kamen | Violet | 8 |
| Julie Hesmondhalgh | Cleo Whitaker | 8 |
| Con O'Neill | Cliff Costello | 8 |
| Freddie Fox | Freddie Baxter | 8 |
| Anjli Mohindra | Veronica Chandra | 8 |
| James Murray | Daniel Coltrane | 8 |
| Vincent Franklin | Henry Best | 8 |
| Cyril Nri | Lance Sullivan | 8 |
| Ceallach Spellman | Adam Whitaker | 8 |
| Letitia Wright | Vivienne Scott | 4 |
| Phaldut Sharma | Leigh | 2 |
| Chris Webster | Phil | 2 |
| Lisa Millett | Katrina | 2 |
| Dino Fetscher | Aiden | 2 |
| Adjoa Andoh | Marie Sullivan | 1 |
| Haruka Abe | Anna Miyagi | 1 |
| Assad Zaman | Tony | 1 |
| Red Madrell | Floss | 1 |
| Christine Bottomley | Lynne | 1 |
| Ardal O'Hanlon | Brian McCoy | 1 |
| Sharon Duncan-Brewster | Maureen | 1 |
| Anu Hasan | Shoona Merchandani | 1 |
| Sagar Arya | Sunil Merchandani | 1 |
| Rufus Hound | Rupert Fuller | 1 |
| Jalaal Hartley | Arjit Malloy | 1 |
| Jude Akuwudike | Ralph Sullivan | 1 |
| Aaron Cobham | Roy | 1 |
| Denise Black | Hazel | 1 |
| Sam Salter | Xav | 1 |
| Jan Uddin | Saul | 1 |
| Luke Newberry | Josh | 1 |
| Jeff Mirza | Mr. Bhose | 1 |
| Tupele Dorgu | Rosemary Pinks | 1 |
| Jack Derges | Louis Barman | 1 |
| Andrew Westfield | Boris | 1 |