Many of the far-right symbols and paraphernalia in the film are based on researched images of real-life examples.
The flyer that is handed to Daniel contains deliberate errors with grammar and on the art work, mimicking mistakes found on the researched ones.
The film was shot on a shoe-string budget with no formal funding or film studios attached. Many problems happened during production, with the loss of cast and crew throughout, as well as the birth of the director's first child midway.
The 30 day shooting schedule eventually took over a year to complete.
The film research looked at several real-life spree killing incidences, particularly young men associated with far-right groups. A number of pictures on Daniel's bedroom wall show some of the people the film is based on, such as Anders Breivik and Raoul Moat.
In early script drafts, the film was based on Thomas Mair, and the events that led up to the killing of Labour MP Jo Cox. Due to budget constraints the theme was dropped so that it was not so difficult to recreate the 'true-life' events with the respect that the subject deserved.
The scene with the FFA speaker at the 'Legion' was filmed at the Mildmay Club in Stoke Newington, as the interior had a traditional 'working man's club' feel. In reality this club is home to a very liberal tradition, with trade unions holding meetings there, and popular left-wing comedians like Stewart Lee having filmed his BBC Comedy Vehicle at the venue.