In message
, at
03:26:25 on Mon, 26 Jan 2009, Mizter T remarked:
"This closure is to enable a lift to be installed to provide step-free
access from the ticket hall to the Northern line platforms."
http://www.tfl.gov.uk/corporate/proj....aspx#entrance

It does make sense to avoid having a direct link from the platforms to
the surface that would bypass the ticket hall.

If you mean "it makes sense not to bypass the barrier line", then that
narrows the possibilities regarding where this lift will be installed.
In other words, it will have to be somewhere between the barriers and
the escalators - which doesn't feel like it's anywhere near the current
"landside" stairs that are being closed.

However the 'green oval' arrangement you noted earlier might in fact
play host to a separate lift that would link the surface to the ticket
hall.

There's nothing shown on the plans (which I've now found). Indeed it may
well be above the escalator down to the Victoria Line, which limits the
possibilities of putting anything overhead.
--
Roland Perry