* RealLifeRelative: In the film, father and son [[Creator/JeremyIrons Jeremy]] and Samuel Irons play the father and Danny. Cyril Cusack, who plays Dr. Spencer, is their father-in-law and grandfather, respectively.
* WriteWhoYouKnow: Captain Lancaster was based on one of Roald Dahl's teachers. As noted above under AuthorAppeal, Dahl loves talking about his childhood.