- Original book and lyrics:
- Eric Maschwitz
- Writer:
- Armin Robinson
- Music:
- Hans May
- Singers:
- The George Mitchell Choir
- Special orchestrations:
- Arthur Wilkinson
- Special orchestrations:
- Stanley Andrews
- Orchestra directed by:
- Eric Robinson
- Settings Designer:
- Richard Greenough
- Associate Producer:
- Trevor Clark
- Producer:
- Walton Anderson
- Fleischmann:
- Victor Baring
- Laboratory assistant:
- Tom Linden
- Snowy Adams:
- Milo Lewis
- Edith:
- Rosemary Morgan
- Lisa Marvin:
- Barbara Kelly
- Giovanni:
- Peter Raymonde
- Tony:
- Tom Chatto
- Rocco:
- Guy de Monceau
- Paolo Marinelli:
- Norman Lawrence
- Joe Erdman:
- Hartley Power
- Comtessa Spoldini:
- Cicely Paget-Bowman
- Lord Poleigh:
- Alan Reid
- Caporelli:
- Max Russell
- Pietro:
- Ivan Berold
- Binci:
- Dino Galvani
- Bazzini:
- Leo de Pokorny
- Testi:
- Edmund Purdom
- Giulietta Binci:
- Eugenie Castle
- Barolo:
- David Davies
- Maitre d'hotel:
- Guy de Monceau
- Cabaret Act:
- Tom Linden
- Cabaret Act:
- Mary Reynolds
- Cameraman:
- Tom Chatto
