The film was shot using donated film stock, left-over from the Paul Greengrass movie Captain Phillips (2013).
The film crew were completely unaware Andy Nyman wasn't actually Scottish. He spoke in a Scottish accent throughout the shoot, and was so convincing that when Nyman answered a phone call in his own English accent between takes, the crew assumed his native accent was actually a joke. He eventually convinced the crew he wasn't actually Scottish, just a good actor.
Frank's story has parallels with a real-life bomb-plot in the town of Kilwinning, where an individual identifying as protestant, sent homemade parcel bombs to Scottish Catholics. The wall-box used by Frank in the film, is in fact the exact wall-box where devices were posted.
Loyal has received two nominations for the BAFTA Scotland New Talent Awards.