Boo to TFL for not having a sense of humor!
They have done away with the voice of the underground Emma Clarke because she posted some spoof announcements on her website. I think it's a bit of a poor show especially as the clips are really rather funny.
http://www.metafilter.com/66883/The-Voice-of-the-Underground-is-silenced.
Clips can be found if you follow the link.