Spudvisor
Mathew Baynton

Jamie Winton / Ariel Conroy (10 episodes)

Paterson Joseph

General Arnold Gaines (10 episodes)

Kyle Soller

Scotty McNeil (10 episodes)

Rob Lowe

Father Jude (10 episodes)

Lloyd Owen

US President (6 episodes)

Diana Rigg

Sutton (4 episodes)

Sutton (voice) (1 episode)

Anthony Howell

Father Christophe (3 episodes)

Max Brown
Nina Sosanya

US Marshall Tess Carter (3 episodes)

Charlie Condou

Father Alphonse (2 episodes)

Louis Mahoney

Cardinal Anderson (2 episodes)

Jeff Mash

Jacob Gardner (2 episodes)

Oliver Ford Davies

Cardinal Crawshaw (2 episodes)

Sylvie Bolioli

Sister Francoise (1 episode)

Claire Brown
Divian Ladwa

Jamie's Solicitor (1 episode)

Tobias James-Samuels
Ian Porter

Homeland Spokesman (1 episode)

Janusz Sheagall

Polish Hospital Official (1 episode)

Phelim Kelly

Warsaw Protester (1 episode)

Adam McNamara

Security Guard (1 episode)

Erica Muscat

Homeless Woman (1 episode)

Paul Portelli
Ann Akinjirin

Bank Customer (1 episode)

Naoko Mori

Nocturnapram Professor (1 episode)

Jane Bertish

Mother Benedicta (1 episode)

Eben Young

US Newsreader (1 episode)

Maisey Bawden

Genesis Survivor (1 episode)

Alana Hood

Genesis Survivor (1 episode)

Ronan Summers

Guard Chardwick (1 episode)

Agata Jarosz

Polish doctor (1 episode)

Sofia Abbasi

Glamorous Lady (1 episode)

Stephen Parker

Mission Controller (uncredited) (1 episode)

Elizabeth Bromby

Standby Art Director (10 episodes)