Actors:
Margaret Neale as June Challis,
Denys Peek as Robert Duncan,
Ralph Nossek as Professor Ramsay,
Trevor Bannister as Peter Barry,
Brandon Brady as Brian Barclay,
Celia Bannerman as Diana Winters,
William Abney as Ian Murray,
Julian Somers as Sir John Chandos,
David Munro as Floor Manager,
Terrence J. Donovan as Captain Wade,
