Continuity mistake: When mixing drugs to overdose the others in their kitchen, while wearing a gas mask, Richard (soldier) has long hair, yet throughout the rest of the film he has short shaved hair.
Dead Man's Shoes (2004)
1 mistake
Directed by: Shane Meadows
Starring: Paddy Considine, Toby Kebbell, Gary Stretch, Stuart Wolfenden
Answer: Nanou 2 by Aphex Twin.