Continuity mistake: In "Twenty-One Today" (4-8) Williams says that he grew up in an orphanage and didn't know who his parents were, but in this episode he says that his father was a coal miner in South Wales.
It Ain't Half Hot Mum (1974)
Episode list - season 4
Starring: Melvyn Hayes, Windsor Davies, Don Estelle, Donald Hewlett
| All season 4 mistakes | Mistakes | |
|---|---|---|
| 1 | Monsoon Madness | 0 |
| 2 | Kidnapped in the Khyber | 0 |
| 3 | A Fate Worse Than Death | 0 |
| 4 | Ticket to Blighty | 0 |
| 5 | Lofty's Little Friend | 0 |
| 6 | Flight to Jawani | 0 |
| 7 | We Are Not Amused | 0 |
| 8 | Twenty-One Today | 1 |
More mistakes in It Ain't Half Hot Mum
Trivia: Jonathan Ross appears in this episode as an uncredited extra, he's a soldier in the demob centre.