Short, stout Scottish actor David Thursby came to Hollywood at the dawn of the talkie era. Thursby was indispensable to American films with British settings like Werewolf of London and Mutiny on the Bounty (both 1935). He spent much of his career at 20th Century Fox, generally in unbilled cameos. Often as not, he was cast as a London bobby (vide the 1951 Fred Astaire musical Royal Wedding, in which he was briefly permitted to sing). David Thursby remained active until the mid-60s.
by Hal Erickson biography