Eric Sykes

Mr. Groomkirby

Julia Foster

Sylvia

Peggy Mount

Mrs. Gantry

Mona Washbourne

Aunt Mildred

George Cole

Defence Counsel

Jonathan Miller

Kirby

Alison Leggatt

Mrs. Groomkirby

Douglas Wilmer

Judge

Glyn Houston

Detective Inspector Barnes

Graham Crowden

Prosecuting Counsel

Kenneth Farrington

Stan

Walter Horsbrugh

Clerk of the Court

Frederick Piper

Usher

Vincent Harding

Policeman / Bus Conductor

Tommy Bruce

Gormless (voice)

Trevor Bannister

Groomkirby's Co-Worker