[excerpt from "The Forth Generation," third in the Ninth Doctor: Old Friends set, written by Roy Gill]
Brig: A human-cyber alliance! Never thought I'd see the day.
9: Don't mess it up! Remember, they're people.
Brig: We'll do our best. (sigh) What a time we've had, eh? Rather more eventful I'd reckon on when Doris and I first headed north. Not exactly the holiday I'd promised.
9: Doris! Wonderful Doris! It's been good to catch up. Where's she off to now?
Brig: First Edinburgh, then Glasgow; between you and me, she's getting a little impatient. A few days flying solo, seeing the sights... do us both a world of good.
9: I reckon she keeps you in fighting order!
Brig: Well, I s'pose you'll be off now, too, back into that dratted police box of yours and away without so much as a word of notice.
9: will I? Why's that, then?
Brig: That is your TARDIS, lurking down that close. Although... looks a touch more battered than I remember!
9: Oi! Bit personal! Anyway... why would I just rush off?
Brig: because, you nearly always do! Leaving other people to pick up the pieces.
9: you've changed! Why can't I have changed, too?
footsteps
Brig: Doctor, I must ask... are you really happy traveling by yourself?
9: I said so, didn't I? (scoffs) You're never volunteering to jump on board.
Brig (laughs): oh, good heavens, no! No, that's a young person's game...
9: I was gonna say!
Brig: All the same... perhaps you need someone to keep you in fighting order, too. It's a tough old life, being alone. Took me a while to understand that, myself.
9: I'll.... think about it. Anyway, I've got lots of friends, all over this universe, and the next one, and the next, scattered about like stars in the sky! Brilliant, bright, and unique, all of them!
Brig: Alright, alright, alright, I don't doubt it.