Charles Tingwell

as Premier Graham Berry

as Alan Kent

as Inspector Craddock

as Reverend Loftus

as Lawrence Hammill

as Muirhead

as Inspector Craddock

as Inspector Craddock

as Lt. Col. Denny

as Inspector Craddock

as Dr. Neville

as Sam

as Lt. Harry Carstairs

as Professor Alan Nordstrum

as Minister

as Captain Beaver James

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

as Tramways supervisor

as Dr. Miller

as The Headmaster

as Captain Brown / Lieutenant Dean / Helicopter A42 Pilot (voice)

as Derek

as Stewart Simpson Sr.

as Jacko

as Jack Henderson

as Mr. Bennet

as Conway

as Country Doctor

as Jim Muldoon

as Hayes

as Felix

as Andreas Borg

as Dr Harry McKay

as Governor

as Capt. Braddock

as Bob Fisher

as Uncle Charles

as Cyril

as Narrator

as Farmer

as Matt

as Mr. Stevens

as Captain Jaffe

as Dr. Hammond / Quiz Host

as Johnson

as John King

as Duncan Fraser

as Helen's Father

as Father

as Old Stanley

as Dr. Fairburn

as Terry Regan

as Cassidy

as Narrator (voice)

as Dr. Rayment

as Sid Mitchell

as Insp. Reg Lawson

as Doctor Alan Dawson

as Martin

as John Conroy

as Luke Parker

as Gallery Visitor

as Peter Merriman

as Sandy Duncan

as Older David Collins

as Dr. Baker

as Max Bell

as Redwood

as Alan Dawson

as Bert Clarke

as Self

as William Brown

Role: Director

as Major Dryden

as Narrator

as Sam Curzon

as Captain Jaffe

as Cpt. Dantor

as Harry Ferguson

as Edward Brooks

as John Mitchell

as Lieutenant Dean / Carter (voice)

as International Space Control (voice) (uncredited)

as Dr. Lang / Tanner (voice) (uncredited)

as Old Snowy

as Charles

as International Space Control Commander (voice)

as Justice Masters

as Lionel

as Host

as Winston Churchill

as Lieutenant Dean / Captain Brown / Agent 042 / Various Characters (voice)

as Mark Blaine

as Mitchell / Bruno (voice) (uncredited)