"Mizter T" wrote in message
...

(Also worth noting that OSIs don't generally apply when exiting and then
re-entering the same station/ gateline - e.g. if one were to exit Euston
tube, then re-enter, that would start a new journey - though I'm not sure
how things are configured at say Victoria, London Bridge, Liverpool Street
or other NR termini stations, where one could concievably exit, circulate
and then re-enter as part of an overall rail journey.)


I can only see that happening at Victoria where, AIUI, platforms 1-8 are
treated as a different station from platforms 9-19 with an OSI between them.
I can't see any valid case for an OSI between the two gatelines on the
Southern (platforms 9-19) side of the station.

At London Bridge all the platforms are accessible to each other and from any
gateline so I would expect a re-entry to create a new journey. I don't know
the other London Termini sufficiently well to be able to comment on them.

--
DAS