| Guest Stars |
| •Andy Serkis | played | Michael Lawler | Recurring (second appearance) |
| •Charles Dale | played | D.C.I. Wheelan | Recurring (second appearance) |
| •Danny McGrath | played | John Holland | Recurring (second appearance) |
| •Edward Kingham | played | DC Alan Leach | Recurring (second appearance) |
| •James Hooton | played | Wayne Fitten | Recurring (second appearance) |
| •John Gannie | played | Pathologist | Recurring (second appearance) |
| •Michael Hodgson | played | Anthony Matchin | Recurring (second appearance) |
| •Paul Kynman | played | Frank D'Silva | Recurring (second appearance) |
| •Ralph Ineson | played | Chris Wray | Recurring (second appearance) |
| •Riz Abbasi | played | Tariq Khan | Recurring (second appearance) |
| •Tara Moran | played | Hannah Donald | Recurring (first appearance) |
| •Trevor Fox | played | Peter Carol | Recurring (second appearance) |
| •Ian Kelsey | played | Carl Laing | |
