"Martin Petrov" wrote in message

Which is fine and
dandy for regular commuters through that station, but if it's an
"event", I wouldn't have thought it likely that the footie fan or
concert goer would pass through that station again within three
days.

... except, of course, when they go home from the footie or event.

As I read it, this is likely to happen on the way home, but I might
have misunderstood. I suppose it makes sense if it's on the way in,
as you suggest.

I would expect that the key time for this would be after a football
match etc - turnstiles open and people in in football grounds for up
to an hour before the game - the ground is the empty within minutes.
Same for a gig or something similar. Witness queuing after games at
Upton Park station or Highbury and Islington or Fulham Broadway or
shudder Wembley Park after games - getting to the ground is
substantially easier, and usually nothing more than "a little busy".

That was my thought, which is why I wonder how this could work if
visitors are expected to go through the event gate line again within
three days. Maybe this is why the problem[1] is occurring.

[1] problem for customers of course; TfL makes a nice profit.