| Name | Character | Episodes |
|---|---|---|
| Scott Handy | Robin Lane | 12 |
| John Simm | John Middleton | 12 |
| Juliet Stevenson | Clem Allingham | 12 |
| David Ryall | Old Bert Middleton | 12 |
| Maxine Peake | Grace Middleton | 12 |
| Matt Stokoe | Gerard Eyre | 12 |
| Charlie Murphy | Martha Lane | 6 |
| Annabelle Apsion | Margaret | 6 |
| Joe Armstrong | Bairstow | 6 |
| Emily Beecham | Caro Allingham | 6 |
| Ben Batt | 6 | |
| Rupert Evans | Edmund Allingham | 6 |
| Augustus Prew | George Allingham | 6 |
| Derek Riddell | 6 | |
| Anthony Flanagan | Arnold Hankin | 6 |
| Nico Mirallegro | Joe Middleton | 6 |
| Ainsley Howard | Norma | 6 |
| Juliet Aubrey | 2 | |
| Julian Sands | Lord Kilmartin | 2 |
| Nicholas Farrell | 1 | |
| Sam Hazeldine | 1 | |
| Andrew Knott | 1 |