In message ,
Colin Rosenstiel writes
If I'd bought an LU ticket, it would have got swallowed at KXSP

They aren't, because you need to be able to change from the deep level
lines to sub-surface lines, and that requires exiting barriers.

Not much longer. One of the effects of the present works will be to end
the need to traverse exit barriers to make tube interchanges.

I noticed that the new St Pancras station had two sets of escalators
going down into a dark hole underneath the road between KX & StP. It's
still a very long way from there to the Met Line platforms (much further
than XK Platform 11). Nice to see progress, but I don't think it's all
going to be open for a year or two.
--
Roland Perry