On Wed, 28 Nov 2007 01:37:41 +0000, Barry Salter
wrote:

The main problems being either mispronunciation or a complete lack of
inflection where you'd normally expect it. At least where there's a
(human) automated announcer it generally sounds more "natural"...Though
you can't beat a *properly trained* "live" announcer.

Right. The recorded announcements on the Tube have major inflectional
problems.