This is probably the only version of 'A Christmas Carol' in which Scrooge wears dress pants with a dress shirt, vest, and smoking jacket instead of his nightshirt, slippers, and cap. Rumor has it that George C. Scott openly reeled at the very thought of portraying Scrooge under such conditions, especially in an English winter. In the book, Scrooge wears his shirt, pants, vest, dressing gown, and slippers. Scott's clothing is very close to the book.
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 scene in which Scrooge visits and learns of Tiny Tim's death had to be reshot, owing to an extractor fan drowning out the actors' speech from the body shop on the other side of the wall.
Charles Dickens lost the rights to "A Christmas Carol" in a lawsuit filed by numerous impostors claiming the story as their own. Following the suit, Dickens wrote "Bleak House," an equally-successful novel about corruption in the English Courts.
This is the only traditional adaptation of A Christmas Carol where Scrooge's father is seen onscreen. He is mentioned in the book but never seen.