While Gadd says he never writes with actors in mind, he couldn’t shake the idea of Jamie Bell, who starred in Billy Elliot and Rocketman, playing Niall.
“He’s a very celebrated actor, but in my mind, still underrated,” he says, adding he felt Bell, set to star in the upcoming Peaky Blinders series, “looked right” for the part.
Ultimately, Gadd is keen for people to make their own mind up about the ending of the series and the characters.
“Whatever they think the ending is, whatever they think the show’s about, that’s probably what it is.”
You can watch Half Man on BBC iPlayer every week from Friday 24 April