Did You Know?

Michael Hordern was not on set when the "Marley's Ghost" segment was filmed; he was added in later through the use of an optical printer. He only appears together with Alastair Sim in the two scenes at the end of the "Ghost of Christmas Past" sequence, the latter of the two being the scene where Jacob Marley dies. This was also true of Michael Dolan, who played the Spirit of Christmas Past; he never actually played any scenes on the set with Sim.

Although the word "Scrooge" means a stingy person now, in Charles Dickens's time, the word was a slang term meaning "to squeeze."

The word "humbug" is misunderstood by many people, which is a pity since the word provides a key insight into Scrooge's hatred of Christmas. The word "humbug" describes deceitful efforts to fool people by pretending to a fake loftiness or false sincerity. So when Scrooge calls Christmas a humbug, he is claiming that people only pretend to charity and kindness in an scoundrel effort to delude him, each other, and themselves. In Scrooge's eyes, he is the one man honest enough to admit that no one really cares about anyone else, so for him, every wish for a Merry Christmas is one more deceitful effort to fool him and take advantage of him. This is a man who has turned to profit because he honestly believes everyone else will someday betray him or abandon him the moment he trusts them.

Changes to the screenplay from the Charles Dickens novella were made, mostly in the Christmas Past sequence. Among them being: - Reversing the birth order of Scrooge and his sister, so as to add that Scrooge's mother died giving birth to him. - Creating a character named "Mr. Jorkin", who does not appear in the book. - Flash-backs of several incidents in Scrooge's past (e.g. his sister's death, meeting Jacob Marley, taking over Feziwig's Warehouse, and Marley's death) which do not appear in the book.