Loosely based on the early life of Guy Burgess, a key figure in the Cambridge Five spy ring of the 1930s and 1940's, who eventually defected to Russia in 1951.

Eton College reportedly declined to allow filming at the school.

In the original West End play of "Another County" that ran in London in 1982, Kenneth Branagh, at age 22, originated and played the part of Judd. In the movie the part was given to Colin Firth. Firth had also been in the original play but had played the character Bennett. Rupert Everett repeated the same role he had played on stage. Ironically, it had been Branagh who won the Society of West End Theatre award that year for 'Most Promising Newcomer' for his part in the play. In 1987 both Firth and Branagh would co-star in the movie 'A Month in the Country'.

A fountain was added to Brasenose College specifically for the film.

A very youthful Earl Spencer appears as an extra in several scenes.

Film debut of Marek Kanievska.

Film debut of Nicholas Rowe.