The family name "Sackville-Bagg" in this film is a reference to J.R.R. Tolkien's Lord of The Rings. Bilbo and Frodo Baggins are related to the Sackville Bagginses.
For the Spanish Castilian dubbing, characters kept their original German names.
The motto on the McAshton crest "Sola Animo At Maniforti" translates to "Alone in spirit but with strong hand" ("alone" is feminine while "spirit" is masculine.
Richard E. Grant (Frederick Sackville-Bagg) and Jim Carter (Rookery) would later reunite in the 5th season of Downton Abbey (2010).