Roland Perry wrote:
In message , at 18:29:30 on Fri, 23
Mar 2007, Clive D. W. Feather remarked:

Every train at King's Cross has a booked and timetabled platform.

Do they still have that station announcer who yells at people (to go
back to the concourse) who "guess" the platform before it's published?

Yes. (They all do it to an extent, but there's one who seems keener
than the rest.) It usually only happens at peak times when either
a departure, or the announcement of its platform, has been
delayed and I can understand why they do it. Although I'm also
guilty of being one of the lurkers who avoids going back
to join Queue A...