Adolescence creator Stephen Graham has shared what he considers the show’s “biggest achievement”.

The British actor wrote and stars in Netflix's new limited series, shot as a series of oners, that captures the aftermath of a child's violent crime.

The star says the special approach to the show from producer Warp Films, co-creator and writer Jack Thorne and director Philip Barantini, meant that he was "the most zen as an actor I've ever been."