Creeper Martin

Norman

Dr. Edward Staunton

Ronnie Brown (1 episode)

Henry Caldicot

Henry Hobbs

Ian Frasier (1 episode)

Pumblechook (2 episodes)

Pumbleneck

Bratislav

Harrison

Sydow

Mr. Garter

General Bukharin

Dougie Hodd (6 episodes)

Berger (2 episodes)

Billy Mann

Captain Henry Cooke

John Hill (1 episode)

Fred Voles (1 episode)

Sidney Callow

Karl Vessem (1 episode)

James Burge

Big Al (4 episodes)

Joseph Stalin

Jo Stiarkoz

Big Al (6 episodes)

Duggan (1 episode)

Jo Stiarkoz (2 episodes)

Inspector Layton

Mr. Perivale Blythe (1 episode)

William Pitt, Earl of Chatham

(1 episode)

Major (1 episode)

Major

Doctor Watson (4 episodes)

Ernie Cade (7 episodes)

Thomas Barlow (uncredited) (1 episode)

Thomas Barlow (1 episode)

Bernard

William Pitt, Earl of Chatham (1 episode)

Bernard (1 episode)

Hackett

Matthews

Roy Bland (7 episodes)

Stanley Bruce (1 episode)

Silver (voice)

Briggs

Matthews (3 episodes)

Mr. Brabazon

Joey

Jack

Jack (1 episode)

Det. Sgt. Bates (1 episode)

Gerald Fletcher

John Partridge

PC Snow (7 episodes)

PC Henry Snow (3 episodes)

Harry (1 episode)

(1 episode)

Lomax (1 episode)

Plain Clothed Policeman

Charlie Mason (2 episodes)

(590 episodes)

PC Smith (2 episodes)

PC Jacks (1 episode)

Chopper Martin (1 episode)