The movie had an unconventional shooting schedule. Tom Hardy filmed his part in 6 days, shooting the movie twice per night as it was filmed in a single take. The other actors were in a hotel room, speaking on the phone with Hardy, who was on location.
The BMW used in the film is installed with a "low fuel warning" alert and would make a noise whenever the car was running out of petrol. The noise disrupted Tom Hardy's performance during takes, but director Steven Knight kept the actor's frustrated reactions in the movie and substituted the car's noise with "you have a call waiting" instead.
Tom Hardy agreed to star in this film in exchange for Steven Knight being the writer for Hardy's miniseries Taboo (2017).
The license plate on Locke's car reads "Adios" (playing with numbers as letters) which means goodbye in Spanish and is a recurring theme in the film