When it was first planned, Liverpool Street Central Line station was
to have direct-to-platform lifts (which is why the platforms are so
far apart), but just before it was built the plans were changed to use
escalators instead (these are probably the middle set of escalators,
each in their own shaft). However, they kept one of the lift shafts in
the plans, built it, but fitted it out with a spiral staircase.

Where is that spiral staircase?
Does it still exist?


I'm also curious about the connection to Broad Street. The surface
building would have been to the SW of the platforms, slightly beyond
the southern headwall and then to the west. So how was the connection
made to it?

There are escalators between the two platforms heading south, but
presumably these were added when Liverpool Street mainline station was
rebuilt, so was there previously some access to broad street in their
place?

Or perhaps the two passages through the platforms' southern headwalls,
which seem to have a couple of steps further down them, are something
to do with the access?