The Edgewarebury Hotel ("The Elizabethan" in this episode) also appeared in feature films Portrait of a Sinner (1959) and School for Scoundrels (1960), where it doubled as the tennis club where Palfrey takes on Delauney; also in Randall & Hopkirk (Deceased) episode The House on Haunted Hill (1969) It is also used in the films The Liquidator (1966); The Devil Rides Out (1968) and a 1974 episode of Special Branch where it is used as a restaurant.
While Tara is building a house of cards, a faint hint of the closing tag theme from the Emma Peel seasons can be heard in the soundtrack.
No obligatory interior rear view mirror in Tara's Lotus Europa