- Real Song Theme Tune: The song "Gentleman Jack" predates the series, although only by a few years.
- The Red Stapler: Visits to the real Shibden Hall, which was used as a filming location for both exteriors and interiors, tripled after the series was broadcast, leading to extended opening hours.
- Role Reprise: Gemma Jones played Anne's aunt in a earlier adaption of Anne Lister's story.
- Stunt Casting: Sofie Gråbøl, the most famous Danish actress in Britain thanks to Forbrydelsen, plays Queen Marie of Denmark.
Trivia / Gentleman Jack