- In conjunction with the release of this film (c. 1968-1969), Random House published a hardcover novelization of the film's screenplay for younger audiences, illustrated with stills from the film. Among the stills featured were scenes showing the arrival at the workhouse and the death of Oliver's mother, who, at least in U.S. prints, never appears in the film.
- Early rumors regarding casting included 'Richard Burton' and 'Elizabeth Taylor' as Bill and Nancy, and either 'Laurence Harvey' or Peter Sellers as Fagin; though eventually Ron Moody was asked to reprise his stage role. Jack Wild had played one of Fagin's boys in the London production, but was now old enough to play the Artful Dodger. Shani Wallis finally won the role of Nancy nearly a year after first auditioning when she demonstrated an acceptable Cockney accent - the one she grew up with.
- The London sets covered six sound stages and a huge studio backlot - with rich and poor sections. The sets were adaptable overnight in spite of their sturdy look, due to the fact that single dance numbers sometimes required changing sets up to a dozen times.
- "Boy For Sale" was shot in July despite the required snow setting; exterior shots depended on adequate cloud cover due to the erratic weather in London. The snowballs were made of polystyrene, salt, crazy foam and mashed potatoes.
- The cast included 84 boys between 8 and 15 years of age, and one member of Parliament suggested they were being exploited just as the depicted orphans had been. The filmmakers replied that they needed protection more than the boys did, due to the rowdy nature of the production during the summer.
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