| Name | Character | Episodes |
|---|---|---|
| Lucy Punch | Melissa | 16 |
| Emma Fielding | 16 | |
| Steve Nicolson | 16 | |
| Beth Goddard | 16 | |
| Ardal O'Hanlon | 16 | |
| Mick Ford | 16 | |
| Nisha Nayar | 3 | |
| Luisa Bradshaw-White | 3 | |
| Pip Torrens | 1 | |
| Abigail Thaw | 1 | |
| Tony Robinson | 1 | |
| Stephen Mangan | 1 | |
| Nicola Stephenson | 1 | |
| Eric Loren | 1 | |
| Anthony Green | 1 | |
| Tamara Beckwith | 1 |