He felt the delivery of the piece was a bit patronising. I know what he means. For Wired I was expecting something a bit more hard-hitting or at least with a more curious bent or maybe even something that delved into some unusual technological discovery or secret that no one knew about.
I suppose the problem with filming anything when you're invited in at a time when no one else is around, is that you'd have to get Tube Lines to clear the film & "in the current climate" anything hidden or secret would need to be kept exactly that. I know from personal experience that you more or less have to give Tube Lines your blood group, mother's maiden name & a lot of other personal details to get underground out of hours!
Still if you'd like to see a short piece about some of the engineering & cleaning work that goes on in the small hours, it's does the job! Let us know what you think.