Dear Mr. Prohack

Arthur Prohack

Charles Prohack

Eve Prohack

Mary Prohack

Mimi Warburton

Oswald Morfrey

Plover

Lady Maslam

Sir Paul Spinner

Tony

Dr. Viega

Polish Man Servant

Cartwright

Sir Digby Bunce

Carrell Quire

Mrs. Griggs

Nursie

Laura Postern

The Director General

Benny Erivangian

Tailor's Assistant (uncredited)

Mr. Prohack's Personal Assistant (uncredited)

Hat Salesman (uncredited)

Actress (uncredited)