With Tom Hardy being a method actor, he lost weight in preparation for filming to give his character the thin look of the drug addict and suicidal figure Stuart Shorter was in real life.
The Post Office featured in 1979 and 1993 scenes is the former Post Office (currently an empty shop) at Fen Ditton, near Cambridge.
Tom Hardy and Benedict Cumberbatch's first film together; they later starred together again in Tinker Tailor Soldier Spy (2011).
Tom Hardy and Benedict Cumberbatch have played villains in the Star Trek film franchise. Hardy played Praetor Shinzon in Star Trek: Nemesis (2002), and Cumberbatch played Khan Noonien Singh in Star Trek Into Darkness (2013).
Tom Hardy and Benedict Cumberbatch have played comic book characters in film adaptations. In the DC universe, Hardy played the role of the villain Bane in The Dark Knight Rises (2012), while in the Marvel universe, he played Eddie Brock and Venom. Cumberbatch starred as Stephen Strange better known as Doctor Strange.