[2] Hirschhorn left South Africa for London in April, 1963 and in 1964 became a story editor at the UK's ABC, a franchise holder for the ITV network.
[3] Among the many luminaries Hirschhorn interviewed and profiled for the Sunday Express were Tennessee Williams, Marlene Dietrich, Mae West (who was also the subject of a biography by Hirschhorn), Noël Coward, Jack Nicholson, Dustin Hoffman, Judy Garland (in her very last interview), Rita Hayworth, Bing Crosby, Billy Wilder, George Burns, James Stewart, Alfred Hitchcock, Woody Allen, Mel Brooks, Rosalind Russell, Betty Grable, David Niven, Rex Harrison, Yul Brynner, Sammy Davis Jr., Julie Andrews, Arnold Schwarzenegger, Kirk Douglas, Tony Curtis, Mickey Rooney, and Ginger Rogers.
Writing in the Chicago Tribune Book World, Richard Christiansen named The Warner Bros. Story a "bounteous treasure trove of information and entertainment" while Choice remarked that Hirschhorn's entries for the films were "frequently witty and even critical…they are reviews as much as they are narratives".
[7][8] Beginning in the mid-1980s, Hirschhorn has put together "one of the world's finest collections of rare first-edition books",[9] largely consisting of "almost all the most notable 20th-century authors".
[10] The collection included all the major work of Ernest Hemingway, F. Scott Fitzgerald, Graham Greene, William Faulkner and John Steinbeck.