The green convertible sports car Jonathan drives is a Triumph TR2, produced between 1953-1955, although the modern registration suggests that it may be a replica.
When Emelia (Jessica Brown Findlay) goes to purchase liquor, the store clerk asked for proof that she was 18. Emelia merely showed her breasts and exclaimed: "There. Are these not the breasts of an 18 year old?" Findlay was 22 when she acted in this film.