The Belles of St Trinian's - Cast

Cast

• Alastair Sim as Headmistress Millicent Fritton / Clarence Fritton
• Joyce Grenfell as Sergeant Ruby Gates
• George Cole as Flash Harry
• Hermione Baddeley as Miss Drownder
• Betty Ann Davies as Miss Waters
• Renee Houston as Miss Brimmer
• Beryl Reid as Miss Wilson
• Irene Handl as Miss Gale
• Mary Merrall as Miss Buckland
• Joan Sims as Miss Dawn
• Balbina as Mlle de St. Emilion
• Jane Henderson as Miss Holland
• Diana Day as Jackie
• Jill Braidwood as Florrie
• Annabelle Covey as Maudie
• Pauline Drewett as Celia
• Jean Langston as Rosie
• Lloyd Lamble as Superintendent Kemp Bird, boyfriend of Ruby Gates
• Richard Wattis as Manton Bassett, civil servant in the Ministry of Education
• Guy Middleton as Eric Rowbottom-Smith, a ministry inspector, now a teacher at the school
• Arthur Howard as Wilfred Woodley, another ministry inspector, also now a teacher
• Michael Ripper as Albert Faning
• Eric Pohlmann as The Sultan of Makyad
• Sid James as Benny, one of Clarence Fritton's racing associates
• Martin Walker as Hankinson
• Noel Hood as Bilston School Mistress
• Vivienne Martin as Arabella
• Elizabeth Griffiths as Gladys
• Andrée Melly as Lucretia
• Belinda Lee as Amanda
• Michael Kelly as Bill
• Tommy Duggan as Joe
• Paul Connell as Sam
• Lorna Henderson as Fatima
• Vivien Wood as Miss Anderson (as Vivienne Wood)
• Cara Stevens as Sultan's Secretary
• Jerry Verno as Alf, the bookmaker
• Jack Doyle as Assistant Trainer
• Windsor Cottage as the Horse "Arab Boy"

Ronald Searle appeared in a cameo role as a visiting parent. Roger Delgado plays the Sultan's aide. It was also the first film appearance for a 17 year-old Barbara Windsor.