Agnès Laurent as Madeleine Lafarge - The French Mistress

Cecil Parker as John Crane M.A. Headmaster of Melbury School

James Robertson Justice as Robert Martin / 'Bow Wow'

Ian Bannen as Colin Crane The Headmaster's Son

Irene Handl as Staff Sergeant Hodges

Raymond Huntley as Reverend Edwin Peake

Kenneth Griffith as Mr Meade

Thorley Walters as Colonel Edmonds

Michael Crawford as Kent

Henry B. Longhurst as 2nd Governor

David Griffin as Slater

Edith Sharpe as Matron

Robert Bruce as Mr Ramsay

Brian Oulton as 3rd Governor

Scot Finch as Edmonds, Head Boy

Richard Palmer as Milsom

Peter Greenspan as Wigram

Jeremy Bulloch as Baines

Chris Sandford as Poole

David Diarmid Cammell as Vane

Gregory Warwick as Warwick

Nigel Bulloch as Proffit

Gordon Pleasant as Benson

Pearson Dodd as Church

Christopher Beeny as Stephenson

Athene Seyler as Beatrice Peake

Cardew Robinson as Ambulance Attendant

Margaret Lacey as Kitchen Maid

Paul Sheridan as Monsieur Fraguier