Scrooge's headstone prop can still be visited at Saint Chad's Churchyard in Shrewsbury where the cemetery sequence was shot. The production team found the stone, apparently blank and gained permission to have it inscribed. At the end of the shoot it was left in place.
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 a 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.
This is, perhaps, the only version of ACC in which Scrooge wears dress-slacks, a dress-shirt and a vest (with an Alistair Cooke-type smoking jacket)...instead of merely his nightgown, slippers and cap. (Rumor has it that George C. Scott openly reeled at the very thought of portraying Scrooge under such conditions...especially in mid-winter England.) In the book Scrooge is wearing his shirt, pants, vest, a dressing gown and slippers. Scott's clothing is very close to the book.
Charles Dickens lost the rights to his original story "A Christmas Carol" in a court dispute that was brought about by numerous impostors claiming the story as their own. However following the suit, Dickens wrote an equally successful novel called "Bleak House," about the corruption of the English Courts.
The scenes set in the Cratchit family house were filmed in a wine merchants which is still there. The particular building was next door to a car garage.The most iconic scene where Scrooge visits and learns of Tiny Tim's death had to be re-shot, owing to an extractor fan drowning out the actors speech from the body shop the other side of the wall.
The Spirit of Christmas Future responds to Scrooge in the form of an eerie metallic noise sounding similar to a cemetery's gate in this production. This spirit is totally silent in the book and other film adaptations.
When Scrooge comments on the existence of prisons and work houses he says "I was afraid from what you said something had stopped them in full force" which does not make any sense except that it rhymes with the actual line from the book which is: "... stopped them in their useful course".
In this film's production, a ghostly hearse passes by Scrooge with Marley's voice calling him before he enters his dwelling. The inspiration comes from a single line in the original text used by Dickens where he references it to illustrate the width of the staircase.
After Scrooge is abandoned by the Ghost of Christmas present, he asks if they can come to a "meeting of the minds". A "meeting of the minds" is one of 6 required elements under the formalist theory of contract. As a Businessman, Scrooge would have been familiar with this term and likely resorted to using it in his desperate situation.
The tormented wandering ghosts are invisible to the audience in this production, but the audience can hear them moan when Scrooge's window opens as Marley's exit. Marley flies through it and vanishes into the darkness with the other tormented wandering ghosts. The moaning expires when Scrooge looks outside his window.
Near the start of the film it is Bob Cratchit not Scrooge that says it has been seven years since Marley died which suggests Bob had also known Jacob Marley and worked under him as well before his death.
George C. Scott noticeably plays a slightly different version of Ebenezer Scrooge in the film. In this version Scrooge has a slightly dark sense of humor such as laughing at his nephew when he claims Christmas is humbug as well as refusing to dine with him and at times is sarcastic to his peers especially the Ghost of Christmas Past and to a lesser extent the Ghost of Christmas Present. Plus Scrooge is quite clever in the film as he uses wit to get what he wants from his fellow men of business at the exchange, uses very complex words and claims to be an expert at the game 'similaries'.