Guy Pearce
Kim Philby - 6 episoder

Damian Lewis
Nicholas Elliott - 6 episoder

Anna Maxwell Martin
Lily Thomas - 6 episoder

Stephen Kunken
James Jesus Angelton - 6 episoder

Adrian Edmondson
Sir Roger Hollis - 6 episoder

Nicholas Rowe
Sir Anthony Blunt - 6 episoder

Monika Gossmann
Galina - 6 episoder

Lucy Russell
Jane Sissmore - 5 episoder

Lucy Akhurst
Elizabeth Elliott - 5 episoder

Jennifer Marsala
Iris - 4 episoder

Anastasia Hille
Flora Solomon - 4 episoder

Karel Roden
Col. Sergei Brontov - 4 episoder

Gershwyn Eustache Jnr
Dr Robert Thomas - 4 episoder

Gilly Gilchrist
MI5 plumber - 4 episoder

Alex Price
Watcher - 4 episoder

Alexander Terentyev
Orchis - 4 episoder

Steven Elder
Tim Milne - 3 episoder

Daniel Lapaine
Donald Maclean - 3 episoder

Jacob James Beswick
Giovanni - 3 episoder

Mark Flitton
Joe - 3 episoder

Rick Warden
Arthur Martin - 3 episoder

Colin Mace
Commissionaire - 3 episoder

Jed Aukin
American reporter - 3 episoder

Anna Andresen
Aileen Philby - 3 episoder

David Coomber
Embassy duty officer - 3 episoder

Jay Simpson
MI6 cabbie - 3 episoder

Alice Barclay
Miss Colefax - 2 episoder

Thomas Arnold
Guy Burgess - 2 episoder

Lucinda Raikes
Miss Harbinson - 2 episoder

Nicholas Pritchard
Dick 'C' White - 2 episoder

Morgane Ferru
Litzi Friedman - 2 episoder

Kate Fahy
Dora Philby - 2 episoder

Jolyon Coy
Desmond Bristow (Boris) - 2 episoder

George Taylor
Vicar - 2 episoder

Reza Diako
Henri - 2 episoder

Dennis Good
Vladimir - 2 episoder

Roger Barclay
John Profumo - 1 episoder

Puiu-Mircea Lăscuș
Russian drunk - 1 episoder

Tuğba Tırpan
Sofia - 1 episoder

Sam Thorpe-Spinks
Russian soldier - 1 episoder