Why are you still concerned then? The information provided earlier shows
quite clearly that the 'main' access, and all the exits, for platforms 1-7
is from the south west corner and south end of the station, where the steps
come up from the tube ticket hall, in fact.[....]

Paul

Although the current passageway from the tube ticket hall that rises
in the station concourse is to be closed, according to the plans at
http://www.tinyurl.com/35bocd (very detailed, so very large file!),
and replaced by a staircase coming off the new passage connecting the
tube ticket hall to the northern ticket hall. Good job too - the
current passage is the one bit of kxsp underground station that is
still in an awful state.