- Puppeteer (Sooty):
- Harry Corbett
- Charlie aka Tom - Piano Mover (His Musical Career):
- Charlie Chaplin
- Presenter (of film:
- His Musical Career): Mary Malcolm
- Writer (Space School):
- Gordon Ford
- Producer (Space School):
- Kevin Sheldon
- Designer (Space School):
- Gordon Roland
- Film cameraman (Space School):
- David Prosser
- Space Commodore Sir Hugh Sterling:
- John Stuart
- Space Captain Michael O'Rorke, his pilot:
- Matthew Lane
- Space Engineer Tubby Thompson, his navigator:
- Donald McCorkindale
- Sam Scroop, his cook:
- Neil McCallum
- Miss Osborne, Space schoolmistress:
- Julie Webb
- Wallace Winter:
- Michael Maguire
- Wilfred Winter:
- Meurig Jones
- Winnie Winter:
- Ann Cooke
- Humphrey Soames:
- David Drummond
- Mrs Winter:
- Maud Long
- Captain of the School:
- Anthony Toller
- Pupil:
- Alanna Boyce
- The stranger:
- Shay Gorman
- Presenter (Sunday at Six):
- The Rev. Paul Morton-George
