Which famous London landmark served as the opening logo for London Films Productions movies?
London Films:  The outbreak of war necessitated that "The Thief of Bagdad" (1940) was completed in California, although Korda's handful of American-made films still had Big Ben for their opening corporate logo. Big Ben: Big Ben is the nickname for the Great Bell of the clock at the north end of the Palace of Westminster in London and is usually extended to refer to both the clock and the clock tower as well.
Big Ben