- Actor Allusion: In the episode "Empty Saddles", Gladys, growing jealous of Betty and Jeff's shared fondness for Gustav Mahler, tells Jeff she has a record of the Black and White Minstrels if he's interested. Ruth Madoc was herself a performer on The Black and White Minstrel Show.
- Hey, It's That Guy!:
- Irony as She Is Cast: Though Gladys' singing voice was mediocre at best, she was played by professional singer Ruth Madoc.
- Write What You Know: Jimmy Perry was a Redcoat at Butlins at around the time the series is set.