DOCTOR: No, no, shush, wait, wait. I've seen something like this before. My memory's getting terrible. You know, three hundred years ago I'd have recognised this like a shot.

DOCTOR: I feel disorientated.

SARAH JANE: This is the Disorientation Centre.

DOCTOR: That makes sense.

FARADAY: Doctor! What the devil's going on?

DOCTOR: An invasion of Earth is going on, Colonel.