“A lot of people would choose the Bad Wolf Bay scene, but for me it’s the scene in The Satan Pit where Rose thinks the Doctor is dead, ten miles below the planet’s surface, with no means of reaching him, and the whole planet is about to fall into a black hole, the murderous Ood are on the rampage… but still she won’t leave. The spaceship is about to depart, but she won’t abandon the Doctor. She’s both selfish and selfless in the same moment. It’s the most beautiful, heart-wrenching performance from Billie.”