Pete Murray the popular broadcaster had a career in British films before his radio years.   He was born in London in 1925.   He was an extra in the Powell & Pressburger classic “THe Life and Death of Colonel Blimp” in 1943.   His films include “Caravan”, “Captain Boycott”, “Hungary Hill” and “My Brother Jonathan”.   He joined Radio Luxembourg in 1949 and thus began a broadcasting career that lasted over fifty years.   His “Wikipedia” entry here.