Alastair George Bell Sim, CBE was a Scottish character actor who began his theatrical career at the age of thirty and quickly became established as a popular West End performer, remaining so until his death in 1976. Starting in 1935, he also appeared in more than fifty British films, including an iconic adaptation of Charles Dickens’ novella A Christmas Carol, released in 1951 as Scrooge in Great Britain and as A Christmas Carol in the United States. Though an accomplished dramatic actor, he is often remembered for his comically sinister performances.

Scrooge is a 1951 British Christmas fantasy drama film and an adaptation of Charles Dickens's A Christmas Carol (1843). It stars Alastair Sim as Ebenezer Scrooge, and was produced and directed by Brian Desmond Hurst, with a screenplay by Noel Langley. It also features Kathleen Harrison, George Cole, Hermione Baddeley, Mervyn Johns, Clifford Mollison, Jack Warner, Ernest Thesiger and Patrick Macnee. Michael Hordern plays Marley's ghost and the older Jacob Marley. Peter Bull narrates portions of Charles Dickens' words at the beginning and end of the film, and appears on-screen as a businessman.