Steven Moffat has confirmed that Peter Capaldi’s past appearances in the Whoniverse will still be addressed and the scene will take place in Series 9.

Speaking in the new DWM he said: “Yes, we’re coming back to that idea. In fact, we’ll be shooting the scene in question really quite shortly…”

On the possibility the Doctor now has infinite regenerations: “Well, he certainly has a new cycle, so it’s not a problem that’s going to worry us for a long time. In fact, at the current rate of Doctors, I really don’t think I’ll be involved in that discussion again. Or I’ll just be a brain in a tank, being wheeled round the convention circuit.”

Moffat also responded to whether Missy is the regenerated John Simm Master, or is she from an earlier point in the Master’s lifeline.

He said: “In my head, as it stands, she’s the one after John. But my researches aren’t complete, so I’d better say nothing, as I’ve been wrong before. You could’ve knocked me over with a feather when the War Doctor turned up in The Name of the Doctor.”