Penniless Lord Whitebait's plan to save his sinking fortunes is to open stately Whitebait Manor to the public. But the public ignores his gesture, and his fortunes fade even further, with a stream of debts threatening to run into a deluge when his daughter's fiancé demands a plush and costly wedding. Where is the cash to come from? Whitebait and his servant Spankforth's answer is a scam involving the theft of a valuable painting from the Manor. How could such a cunningly original ruse fail?
| Actor | Role |
|---|---|
 Brian RixWilfred Sapling | Wilfred Sapling |
| LLeo FranklynBarger | Barger |
 Naunton WayneLord Whitebait | Lord Whitebait |
 Charles HeslopSpankworth | Spankworth |
 Ann FirbankLady Katherine | Lady Katherine |
 John SlaterWarder Lockitt | Warder Lockitt |
 Vera PearceLady Millicent | Lady Millicent |
| AArnold BellGovernor | Governor |
 Alexander GaugePoliceman | Policeman |
 Jack WatlingPeter Brewster | Peter Brewster |
 Irene HandlElsie | Elsie |
 Bernard CribbinsNewspaperman | Newspaperman |
 Wally PatchNewspaperman | Newspaperman |
 Wilfrid LawsonAlbert | Albert |
 Terry ScottPC Budgie | PC Budgie |
 Henry KendallParson | Parson |
| GGarth AdamsPoliceman | Policeman |
| KKeith BanksBailiff | Bailiff |
| FFrank HawkinsBailiff | Bailiff |
| EEdna MorrisCook | Cook |
 Lionel NgakaneConvict | Convict |
| RRaymond RayConvict | Convict |
| JJohn RussellConvict | Convict |
 Andrew SachsConvict | Convict |
 Denis ShawConvict | Convict |
| MMargot BryantWoman in Crowd (uncredited) | Woman in Crowd (uncredited) |
 Ray CooneyPoliceman (uncredited) | Policeman (uncredited) |
| RRaymond DyerCockney Dad | Cockney Dad |