Adolescence star reveals four-word comment from Netflix series that was completely off script

An emerging star from new drama series Adolescence has revealed an amazing bit of improvisation that happened while filming.

The Netflix miniseries consists of four hour-long episodes that are filmed in continuous one-hour long takes.

It stars Stephen Graham, who has teamed up with Boiling Point director Philip Barantini again, having worked together on the kitchen-based series that was also shot in one take.

The play-inspired method of shooting can produce some memorable, raw moments in front of the camera, something you wouldn't get with regularly-shot titles, which stop and start shooting with each scene.

Actor Owen Cooper, who plays Jamie Miller, has received lots of praise for his role on the show, and what makes it even more impressive is the fact that it's the child actor's first gig.

To give you some context, the series follows Graham, who plays Jamie's father, as the boy is accused of stabbing another child to death.

Cooper has been described as a 'spectacular newcomer', and has already had a number of noteworthy moments on screen.

However, in one of his scenes, something he did by accident ended up making the cut due to another cast member thinking quickly on her feet.

The actress in question is Erin Doherty, who plays psychologist Briony Ariston.

Cooper recalled a great moment of improvisation during filming (Netflix)

While guest starring on The One Show, Graham and Cooper spoke about their new show, with the latter coming across as confident and well-spoken when faced with questions about his first time on a TV set.

Cooper explained that both him and Doherty needed to 'bounce off each other' as the episode didn't follow the script.

The hosts then mentioned a 'yawn moment' from the episode, which Cooper recalled: "In episode three, it was the second take of the day - we do two takes a day, so it was the second take and you know I was tired so a yawn came to me.

"Then Erin did an amazing line, she said 'am I boring you?' so that took me back and it made made me smile because it wasn't in the scripts, I wasn't expecting that at all so it took me back a little bit but it was amazing," he revealed.

Cooper's acting performance has been praised by co-stars and critics (Netflix)

Graham further explained the point, highlighting that even though Cooper was 'feeling the pressure', he was 'in the moment'.

"That's all we're trying to do isn't it, be present, be in the moment and with this kind of way of filmmaking, it really helps you to do that," the British actor explained.

Adolescence is streaming on Netflix now.