Besides this film, Philip Glenister and John Simm have co-starred in four series together - Clocking Off (2000), State of Play (2003) Life on Mars (2006) and Mad Dogs (2011). They also both starred in the series Prey (2014) (TV Mini-Series), but in separate seasons.

Shot in just 16 days.

The number '237' (or 23 and 7) are prominent throughout the film, including the day of the robbery 23rd July (23/7).