Season Regulars 12

1. 

   Hugh Bonneville

   Ian Fletcher

2. 

   Olivia Colman

   Sally Owen

3. 

   Jessica Hynes

   Siobhan Sharpe

4. 

   Amelia Bullmore

   Kay Hope

5. 

   Karl Theobald

   Graham Hitchens

6. 

   Vincent Franklin

   Nick Jowett

7. 

   Morven Christie

   Fi Healey

8. 

   Samuel Barnett

   Daniel Stroud

9. 

   Sara Pascoe

   Coco Lomax

10. 

    Joel Fry

    Karl Marx

11. 

    David Tennant

    Narrator (voice)

12. 

    Alex Beckett

    Barney Lumsden

Guest Stars 8

1. 

   Christopher Fulford

   Commander Bob Burford

2. 

   Robin Weaver

   Deputy Asst. Commissioner Rachel Crane

3. Glen Davies

   Dave Mills

4. 

   Jamie Dispirito

   Ben

5. 

   Frankie McCafferty

   Brian McLoughlin

6. 

   Martin McDougall

   Senior Operations Analyst Scott Coldwell

7. 

   Bentley Kalu

   Senior Clandestine Logistics Officer Ryan Burr

8. Jane Whittenshaw

   Security Guard

Crew 1