The actor, who played a serviceman framed for a violent crime in the hit BBC drama, said he “loved” the physical aspect of the training and also learned about his role by being with the veteran.
He said: “He’s a top guy. A lot of fun. But getting into the character, who he was and what he’d been through, just having this guy who’d been through it all so available, emotionally, with all his stories and insights into what it’s like to go on tour was brilliant.”
Turner, 29, pictured, grew up in Chelsea and initially worked as a model, flying to Tokyo with fashion label Comme Des Garçons while his friends did A levels.
He dropped modelling “because I wasn’t making enough money” and worked in a clothes shop before his acting break. He has also appeared in TV drama War And Peace and film Fantastic Beasts: The Crimes Of Grindelwald.
Turner credits his mother for a lot of his success. She worked as a club promoter and was a close friend of Vivienne Westwood’s son Ben, while New Romantic singer Steve Strange lived with them for a while.
He said: “The thing I always find interesting was, yeah, I was growing up on an estate, single mum, working-class, but then I also had all these colourful characters around. It wasn’t about navigating two worlds, there were three, four, five more.”
Read the full interview in ES Magazine, free every Thursday and Friday.