The best actors are those who make an impact with every performance. It doesn't matter what role Martin Compston is playing or how large the screen time; audiences know when they see him that he's going to leave his mark on the project. Through his breakout work in Line of Duty and the opportunities that have come his way since, viewers have also gotten a specific understanding of why he's so talented. It's not simply pure ability; there are certain choices that set him apart.
Source：https://www.cbr.com/martin-compston-line-of-duty-the-nest-traces/
