 Kenneth ConnorMr. Gregory Adams | Mr. Gregory Adams |
 Charles HawtreyMr. Michael Bean | Mr. Michael Bean |
 Leslie PhillipsMr. Alistair Grigg | Mr. Alistair Grigg |
 Joan SimsMiss Sarah Allcock | Miss Sarah Allcock |
 Kenneth WilliamsMr. Edwin Milton | Mr. Edwin Milton |
 Hattie JacquesMiss Grace Short | Miss Grace Short |
 Rosalind KnightMiss Felicity Wheeler | Miss Felicity Wheeler |
 Cyril ChamberlainAlf Hodgson | Alf Hodgson |
 Ted RayMr. William "Wakie" Wakefield | Mr. William "Wakie" Wakefield |
| GGeorge HowellBilly Haig | Billy Haig |
| DDiana BeeversPenny Lee | Penny Lee |
| JJacqueline LewisPat Gordon | Pat Gordon |
| RRoy HinesHarry Bird | Harry Bird |
 Carol WhiteSheila Dale | Sheila Dale |
 Richard O'SullivanRobin Stevens | Robin Stevens |
 Francesca AnnisSchoolgirl (uncredited) | Schoolgirl (uncredited) |
| LLorna HendersonPianiste (uncredited) | Pianiste (uncredited) |
| DDiane LangtonSchoolgirl (uncredited) | Schoolgirl (uncredited) |
| JJane WhiteIrene Ambrose | Irene Ambrose |
| PPaul ColeJohn Atkins | John Atkins |
 Larry DannStudent | Student |
| JJoyce AdamsParent (uncredited) | Parent (uncredited) |
| LLaurence ArcherParent (uncredited) | Parent (uncredited) |
| JJulia AtkinsonStudent (uncredited) | Student (uncredited) |
| JJosephine BaileyStudent (uncredited) | Student (uncredited) |
| MMichael BarnesStudent (uncredited) | Student (uncredited) |
 David BarryStudent (uncredited) | Student (uncredited) |
| AAlan BeatonTeacher (uncredited) | Teacher (uncredited) |
| PPaul BeradiParent (uncredited) | Parent (uncredited) |
| EErnest BlythParent (uncredited) | Parent (uncredited) |
