Gallery Visitor

Winston Churchill

Bob Fisher

Lionel

Minister

Sam

(139 episodes)

Premier Graham Berry

John Conroy

(1 episode)

Martin

Older David Collins (6 episodes)

Cyril (1 episode)

Edward Brooks

Self (1 episode)

Andreas Borg

Professor Alan Nordstrum

Derek (1 episode)

(1 episode)

Farmer

Dr Harry McKay (1 episode)

Country Doctor

Lawrence Hammill

Old Stanley

Governor (1 episode)

Narrator (voice) (39 episodes)

(1 episode)

Hayes (2 episodes)

(2 episodes)

Bert Clarke (2 episodes)

Charles (2 episodes)

Felix (1 episode)

Hughie Geddes (1 episode)

Sandy Duncan

Muirhead

Dr. Rayment

(1 episode)

Max Bell

Stewart Simpson Sr.

Justice Masters

Tramways supervisor

Narrator (6 episodes)

Director (1 episode)

Helen's Father

Uncle Charles (4 episodes)

Cassidy

The Headmaster

International Space Control Commander (voice)

Lieutenant Dean / Carter (voice)

Lt. Col. Denny

Dr. Baker (1 episode)

Sid Mitchell

Jack Henderson

Harry Ferguson

Dr. Miller

Dr. Hammond / Quiz Host (1 episode)

Doctor (uncredited) (2 episodes)

Director (25 episodes)

Duncan Fraser

Redwood

Dr. Fairburn

Father

Insp. Reg Lawson (126 episodes)

Captain Beaver James (1 episode)

John Mitchell

Mr. Bennet (13 episodes)

Jacko

(1 episode)

(2 episodes)

David Soames

Captain Brown / Lieutenant Dean / Helicopter A42 Pilot (voice) (1 episode)

Doctor Fawn / Captain Brown / Airport Operator / Agent 042 (voice) (1 episode)

Macy (voice) (1 episode)

Harris (voice) (1 episode)

Marshall (voice) (1 episode)

Lieutenant Belmont (voice) (1 episode)

Doctor Fawn / Morgan (voice) (1 episode)

Space General Paterson (voice) (1 episode)

Captain Hassel (voice) (1 episode)

Fairfield (voice) (1 episode)

Base Controller (voice) (1 episode)

Carter (voice) (1 episode)

Lieutenant Dean (voice) (1 episode)

Helicopter A42 Pilot (voice) (1 episode)

Macey / 4th Policeman (voice) (1 episode)

Dr. Tony Grant / Angry Young Man / Public Relations Officer (voice)

(3 episodes)

Cpt. Dantor

(6 episodes)

Johnson (1 episode)

Alan Kent

Captain Jaffe

Captain Jaffe (1 episode)

(1 episode)

Major Dryden

Inspector Craddock

Inspector Craddock

Dr. Neville (2 episodes)

Inspector Craddock

Albert Ringwood (1 episode)

Inspector Craddock

Conway

Capt. Braddock

Luke Parker

Alan Dawson

Jim Muldoon

Doctor Alan Dawson (65 episodes)

(1 episode)

Mr. Stevens

Peter Merriman

Lt. Harry Carstairs

Alan Blake

Matt

Narrator

John King

Sam Curzon

Terry Regan