When the suggestion box provides little in the way of suggestions, the staff decide to play background music and a recorded voice to boost sales. Then, when they learn that a cash prize will be awarded to whomever is the voice, the whole floor offer their voices for the department, but it's up to Mr.Grace to decide.
- Mollie Sugden as Mrs. Betty Slocombe
- Trevor Bannister as Mr. Dick Lucas
- Frank Thornton as Captain Stephen Peacock
- John Inman as Mr. Wilberforce Clayborne Humphries
- Wendy Richard as Miss Shirley Brahms
- Arthur Brough as Mr. Ernest Grainger
- Nicholas Smith as Mr. Cuthbert Rumbold
- Larry Martyn as Mr. Mash
- Harold Bennett as Young Mr. Grace
- Moira Foot as Miss Thorpe
- Felix Bowness as The Gent for the Gents'
- Freddie Wiles as Goddard (uncredited)