Péline Liberty was the first choice for "Paula".
The gym scenes were filmed at Muscleworks Gym, London.
The Zippo lighter used by Mark (Mark Epstein) belonged to James Keating, who has never smoked, but had a Zippo.
Daniel Stisen and James Keating began working on the script in October of 2018.
The black and white graffiti wall where Davie and Mark meet for their drug deal is in Bethnal Green, London.