DOCTOR: Is this London?

TODD HULBERT: Yes. I used to be based in Ipswich. But when somebody’s come half way across the galaxy for a business lunch, they don’t want to have it in Ipswich.

DOCTOR: Understandable.

DOCTOR: I’ve always wondered. Why isn’t “phonetic” spelt with an “F”?

ROSE: I can teach you how to spell “Doctor” with an “F”.