On Mar 27, 7:06*pm, Jane Sullivan
wrote:

As I understand it you cannot cross the rails to another platform on the
tube except where the stations are in the open air. On the sub-surface
lines (i.e. not the tube), you can, though.


Even that is not true.

There are many open sections where that are ''line clear'' (which
means in simple terms are treated the same as tunnels) i.e. the
Jubilee all the between Stratford and Canning Town portal is one.


--
Nick