Rennie was one of several English actors cast in the 20th Century Fox medieval adventure story The Black Rose (1950), shot in England starring Tyrone Power and Orson Welles. Rennie was specifically cast as the 13th-century … See more

Rennie began his freelancing career supporting Cornel Wilde in Omar Khayyam (1957) at Paramount. He returned to Britain to play the lead in a war film Battle of the V-1 (1958). He was going to co-produce and star in a wa… See more

During the 1960s, Rennie made guest appearances on such series as The Barbara Stanwyck Show, The Americans, Route 66 (a portrayal of a doomed pilot in the two-part episode "Fly Away Home"); Alfred Hitchcock Presents… See more

Rennie was married twice: first to Joan England, from 1938 to 1945, then to actress Margaret (Maggie) McGrath from 1947 to 1960; their son, David Rennie, is an English circuit judge in Lewes, Sussex, England. Both marria… See more