Russell T Davies
Here's why the actor never appeared on the show.
"So, can you arrange that?"
"I got called into Russell's office. Woo! And he let me know that that’s not acceptable."
The return to the Whoniverse is nigh.
But you're in for a bit of a wait before seeing her on screen.
The new six-part series is set to welcome back cast members from across the BBC sci-fi show's 60-year history.
"Just trying to let it sink in."
The Heartstopper star will play Rose in the sci-fi show’s upcoming 60th anniversary specials.