Well, I'll take you on your word, then, although I have to admit, I don't have the foggiest idea what that's all about. I'm not expecting an immediate explanation if it's something classified of course, but if it isn't...?

[He trails off, hoping that the question is obvious enough that he doesn't need to ask it.]

In any case, it is a rare treat to see someone else from London, though, given that it's rarer than you'd really expect.