Robert Montgomery as Robert Kilmount

Edward Arnold as Quentin 'Doc' Ramsey

Reginald Owen as Gervase Gonwell

Edmund Gwenn as Munsey, the Butler

E. E. Clive as Mr. Redwood

Ronald Sinclair as Master Gerald Kilmount

Norma Varden as Maureen Kilmount

Halliwell Hobbes as Lord Chancellor

Ian Wolfe as Reading Clerk (as Ian Wulf)

Peter Godfrey as Judson

Billy Bevan as Castle Guide

Lowden Adams as Floor Waiter (uncredited)

Harry Allen as Mayor (uncredited)

Radford Allen as Boy (uncredited)

George Anderson as Prison Guard (uncredited)

Jimmy Aubrey as Cockney (uncredited)

Frank Baker as Policeman (uncredited)

Barbara Bedford as Ramsey's Secretary Martha Jackson (uncredited)

Vangie Beilby as Old Maid (uncredited)

Frank Benson as Sexton (uncredited)

Art Berry Sr. as Seedsman (uncredited)

Ted Billings as Townsman Outside House of Lords (uncredited)

Gladys Blake as 'Babe', Silken Legs (uncredited)

Barlowe Borland as Fingal (uncredited)

Matthew Boulton as Ickerton (uncredited)

John Burton as Clerk (uncredited)

David Clyde as Hanger-on (uncredited)

James Conaty as Lord (uncredited)

Bob Corey as Fisherman (uncredited)

Alec Craig as Fingal's Son (uncredited)

Sayre Dearing as Gunman in Card Game (uncredited)

David Dunbar as Plowman (uncredited)

Paul England as Chief Constable (uncredited)

Henry Flynn as Villager (uncredited)

Colonel Ford as Villager (uncredited)

William Haade as Crapshooter (uncredited)

Alec Harford as Mr. Dell (uncredited)

Sam Harris as Lord (uncredited)

Holmes Herbert as Sergeant-at-Arms (uncredited)

Harold Howard as Fisherman (uncredited)

Kenneth Hunter as Lord Tyrmanell (uncredited)

Olaf Hytten as Hodges (uncredited)

Ellis Irving as Russell (uncredited)

Boyd Irwin as Presiding Magistrate (uncredited)

Gladden James as Silky's Secretary (uncredited)

P.J. Kelly as Hanger-on (uncredited)

Colin Kenny as Sergeant (uncredited)

Claude King as Yeoman Usher (uncredited)

Leyton Lee as Adjutant (uncredited)

Miles Mander as Attorney General (uncredited)

Eddie Marr as Kilmount Salesman with Gun (uncredited)

Harold Miller as House of Lords Courtroom Spectator (uncredited)

Edmund Mortimer as Lord (uncredited)

Leonard Mudie as Mr. Allington (uncredited)

Arthur Mulliner as Mr. Brackton (uncredited)

Forbes Murray as Diplomat (uncredited)

William H. O'Brien as Turnkey (uncredited)

Nora Perry as Receptionist (uncredited)

Tempe Pigott as Mrs. Oakes (uncredited)

Harry 'Snub' Pollard as Townsman (uncredited)

John Power as Tourist (uncredited)

Yvonne Severn as Village Girl (uncredited)

Ivan F. Simpson as Hargraves (uncredited)

William Stack as Coroner (uncredited)

Ralph Stock as Constable (uncredited)

Zeffie Tilbury as Miss Nana (uncredited)

Anthony Warde as Kilmount Salesman (uncredited)

Robert Warwick as Clerk at Parliament (uncredited)

Ben Webster as Gaffer Oakes (uncredited)

Ben Welden as Silky's Driver (uncredited)

Frederick Worlock as Lord Elfie (uncredited)