In message , at 18:48:52 on
Sat, 21 Apr 2012, Paul Corfield remarked:
I would imagine there are real
limits to what can be achieved by way of widening / lengthening
platforms at KX either for sub surface or deep tube platforms.

And widening or lengthening platforms at KX wasn't part of the design
aim, which was to reduce the crowding in the various passages (&stairs/
escalators) between the sub-surface and the deep tubes.
--
Roland Perry