 Glynis JohnsCaroline Trewella / Miranda Trewella | Caroline Trewella / Miranda Trewella |
 Donald SindenJeff Saunders | Jeff Saunders |
 Anne CrawfordBarbara Davenport | Barbara Davenport |
 Margaret RutherfordNurse Carey | Nurse Carey |
 Dora BryanBerengaria | Berengaria |
 Nicholas PhippsCol. Barclay Sutton | Col. Barclay Sutton |
 Peter MartynRonald Baker | Ronald Baker |
 Noel PurcellPercy | Percy |
 Joan HicksonMrs. Forster | Mrs. Forster |
 Judith FurseViola | Viola |
 Irene HandlMme. Blanche | Mme. Blanche |
 David HurstSignor Mantalini | Signor Mantalini |
 Martin MillerDr. Fergus | Dr. Fergus |
 Deryck GuylerEditor | Editor |
| AAnthony OliverPawnbroker | Pawnbroker |
| LLawrence WardAlphonse | Alphonse |
 Martin BoddeyMarco (uncredited) | Marco (uncredited) |
 Stringer DavisThe Vicar (uncredited) | The Vicar (uncredited) |
 Meredith EdwardsPolice Constable (uncredited) | Police Constable (uncredited) |
 Lucy GriffithsDr. Fergus' Secretary (uncredited) | Dr. Fergus' Secretary (uncredited) |
 John HorsleySports Organiser (uncredited) | Sports Organiser (uncredited) |
 Dandy NicholsNurse Carey's Landlady (uncredited) | Nurse Carey's Landlady (uncredited) |
 George WoodbridgeFisherman Outside Pub (uncredited) | Fisherman Outside Pub (uncredited) |
| Meredith EdwardsPolice Constable | Police Constable |
