On 16 Jan, 21:09, Paul Corfield wrote:
I think SWT will simply work on the basis that they will have to accept
some "leakage" risk in the AM Peak which I believe is the only time the
steps and subways from the platforms are open.

It isn't [IMX all day weekdays and sometimes even at weekends], but it
doubtless will be once the barriers are imposed. Yay progress.

--
John Band
john at johnband dot org
www.johnband.org