| Episode credited cast: |
 | Christopher Timothy | - | Dr. Brendan 'Mac' McGuire (credit only) |
 | Corrinne Wicks | - | Dr. Helen Thompson (credit only) |
 | Ariyon Bakare | - | Dr. Ben Kwarme (credit only) |
 | Stirling Gallacher | - | Dr. Georgina Woodson (credit only) |
| Ben Jones | - | Dr. Greg Robinson (credit only) |
 | Eva Fontaine | - | Faith Walker (credit only) |
 | Diane Keen | - | Julia McGuire (credit only) |
 | Akemnji Ndifornyen | - | Nathan Bailey |
| Andrea Green | - | Sarah Finch (credit only) |
| Sean Gleeson | - | Ronnie Woodson (credit only) |
| Rest of cast listed alphabetically: |
| Justin Allder | - | Martin |
| Ravi Aujla | - | Luke |
| John Gully | - | Frank |
 | Steven Hartley | - | Dr. Jack Ford |
 | John Inman | - | Teddy |
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