Though he had intended to pursue a career as an architect and surveyor, Sinden, the son of a country chemist, was noticed by impresario Charle F. Smith while appearing in amateur production at the Brighton Little Theatre and invated to join a company entertaining the troops. Rejected for naval service because of his asthma, he underwent a brief training at drama school anf established himself as a promising Shakespearian actor before chosen by Charles Frend for the role of naval officer Lockhart in The Cruel Sea. A suave leading man in British films in the Fifties, he moved on to parts but
… More came to work increasingly in the theatre-playing Othello and King Lear with the Royal Shakespeare Company- unperturable butler to Elaine Stritch's scatty American, Mrs McNab, in Two' Company.
