A Christmas Carol

Scenes showing London from the air incorporate numerous anachronistic features, including the Millennium Footbridge (opened 2000), the reconstructed Globe Theatre (opened 1997) and Southwark Bridge (opened 1921).

Marley tells Scrooge that one spirit will visit him at 1:00 am for the next three nights, but they all appear to him in the same night.

This is repeated verbatim from the book, in which, following all the visits, Scrooge calls them "clever spirits" for doing it all in one night.

Bob Cratchit's job of "clerk" is referenced using both the UK and American pronunciations.

(The English pronounce the letter combination "-er-" like "-ar-", so spoken words like "clerk" and "derby" in the UK would sound like "clark" and "darby" to an American.

) In the scene where the Ghost of Christmas Present shows Scrooge the two children, the boy says "Naff off!" to Scrooge.

The expression was not coined until the 1960s and did not enter general use until the following decade when it was used as a substitute for swearing in a popular, early evening BBC comedy.

Despite the film being set in the 19th century, scenes of London show old London Bridge, which burned down in 1666.

When the first spirit visits Scrooge, servants' bells are shown mysteriously jingling in his bedroom.

Bells tell the servants which room of the mansion is calling for them, and weren't normally placed in the master's bedroom.

They were usually installed in the kitchen, the pantry, or the servants' chambers.

However, 'Charles Dickens' (qv) explained that Scrooge's large house had been subdivided and let out as office space except for a "suite of rooms" that Scrooge kept to himself as living quarters.

Dickens states that there was but one single disused bell in Scrooge's chambers - which "communicated for a forgotten purpose" with another chamber higher in the building.

Dickens notes other bells in the house also began to ring.

Disney chose to put all the bells in the room with Scrooge, which is inaccurate according to the Dickens work and contrary to the way servants' bells were normally placed.

A group of street carolers sings "Joy to the World" in the film.

However, the movie takes place in 1843.

The song "Joy to the World," as we know it, wasn't created until 1848, when Lowell Mason, a Boston music publisher, combined music from Handel's "Messiah" with lyrics from another hymn by Isaac Watts.

Also, "Joy to the World" was originally used as a regular Sunday hymn.

It wasn't considered a Christmas song until 1911, when a recording by singer Elise Stevenson and the Trinity Choir became a Christmas hit.