Self (3 episodes)

Edward Hughes

Mr. Bauer

Richard

Bob

Self - Guest (1 episode)

Professor David Irens

Alfred Miller (17 episodes)

Warren Schifford (8 episodes)

James Lacey MP

Ben

Lord Mountbatten (9 episodes)

Sir Arnold Galavant (1 episode)

Gilbert Aldridge (2 episodes)

Dominic

Doug

Duncan

Harry Smith

John Ruskin

Sean Hughes

Renato Favelloni (1 episode)

Producer

Self (1 episode)

Villandry

Philip Hawkin (3 episodes)

Jake Ryan

Nevile Strange (1 episode)

Sir Charles Maulver (7 episodes)

(2 episodes)

Professor Anderson

Professor Anderson (1 episode)

Peter Higgins

Minister Lee

Greg

(8 episodes)

Francesco Doni

Agent One

Major Côtard

Major Côtard (1 episode)

Oliver Rice (2 episodes)

The American

Max Delius

Rodolphe (2 episodes)

Alex

Marshall, chartered accountant (7 episodes)

Josh Sinclair

Red Knight

Ben Dyson

Crispian Grimes (2 episodes)

Dr. Jim Nightingale

Corporal Hugh Brittan

Franklin Blake

Justin Amberson (1 episode)

John Willoughby

Arch Wilson

Guy Twaite (5 episodes)

(1 episode)

Alister Tundish (12 episodes)

Cato Macgill / Adam Prime

(1 episode)

Jamie Baird