| Nigel Cooke | Walter Fisher |
| Jessie Buckley | Kitty Batten |
| Shaun Evans | DC Endeavour Morse |
| Jessica Ellerby | Diana Day |
| William Mannering | Dr. Malcolm Speight |
| Philip Martin Brown | Bernard Yelland |
| Abigail Thaw | Dorothea Frazil |
| Beth Goddard | Barbara Batten |
| Jonathan Coy | Archie Batten |
| Nick Waring | Force Medical Examiner |
| Pooky Quesnel | Muriel Todd |
| David Westhead | Val Todd |
| Liam Garrigan | Tony Frisco |
| Roger Allam | DI Fred Thursday |
| Caroline O'Neill | Win Thursday |
| Sara Vickers | Joan Thursday |
| Anton Lesser | Chief Superintendent Reginald Bright |
| Jack Laskey | DS Peter Jakes |
| Sean Rigby | PC Jim Strange |
| James Bradshaw | Dr. Max DeBryn |
| James Palmer | Justin Delfarge |
| Shvorne Marks | Monica Hicks |
| Jamie Parker | Dr. Matthew Copley-Barnes |
| Samuel Oatley | Mallory |
| Celyn Jones | Jenkins |
| Emily Plumtree | Lydia Martin |
| Ksenia Lavrentieva | Frida Yelland |
| Michael Hobbs | Returning Officer |
| Greg Bennett | Policeman |
| Nathanjohn Carter | John Pettifer |
| Colin Dexter | Don on Bench outside Beaufort College |
| Faith Elizabeth | Handsome Kissing Couple |
| Mike Fordham | David Grimsby - Liberal Candidate |
| Richard Herdman | Ambulance Man |
| Stuart Matthews | Political Party Official |