Olive Williams (Amy O’Connell in Waste) mentioned Charles in a Q&A on the National Theatre's tumblr (via the @nationaltheatre).
"Do you have any pre-performance rituals?
I like to run my scenes with Charlie playing Trebell. We choose a different accent for every performance which sounds like a silly actor’s game but has really revealed some new nuances in the text and myriad different ways to play the scene...
Who’s your backstage hero?
... Charles Edwards who is invincible. Whatever crazy performance I throw at him he catches the ball and lobs it back."
Waste closes 19 March.