Indra grabs them (Military, Civilian, Intelligence) outside the Cabinet Room, yelling about "a priority alarm...Code Nine. Confirmed Code Nine!" It would be, I guess. That's funny.
Inside, Harriet finally leaves her cupboard.
Asquith has no idea what Indra is talking about, and the other two aliens do their blustery best to cover for him. Indra explains that they've got "software" that "automatically searches all communications for keywords," which is funny, because what I saw was "typists" that "Google," which is way less high-tech than Inda's making it sound: "One of those words is 'Doctor' -- I think we've found him, sir." MI-5 Margaret gets intense: "What sort of Doctor? Who is he?" All Indra knows is that he's "some sort of expert in extra-terrestrial affairs" -- perhaps "the ultimate expert" -- and that he's necessary right now. Harriet listens in, pulling a face. What about the cottage hospitals, bitches? What about the standards of excellence?
There's a TV inside the TARDIS, and the Doctor is channel-hopping. He and Mickey have some kind of "this is what boys are like" conversation about whether it gets "the football," and then the Doctor recognizes someone onscreen. Mickey realizes what they're looking at: "UNIT! United Nations Intelligence Task force -- good people," and explains that, in the last year, he's done a lot of reading up on the Doctor, and has discovered that the Doctor has worked with them in the past: "You look deep enough on the internet, and in the history books, and there's his name. Followed by a list of the dead." The Doctor's like, Cheers. Rose asks why the Doctor hasn't offered to help them already, and the Doctor evades the question: "They wouldn't recognize me. I've changed a lot since the old days." And besides, there's a lot going on, alien-wise: real farting ones, fake pig ones -- he doesn't want to be another alien into the mix. He says he's going undercover, and then tells "Rickey" he can drive, now that the roads are clearing.