"J. Public" wrote in message
...
I had a similar thing with Kings X, when doing Baker Street to Belsize
Park.

i.e.
Swipe in at Baker Street
Swipe out of the circle line at Kings X
Swipe back in to the NPV at Kings X
Swipe out at Belsize Park

If you look on the machine, it said my first journey was free, and charged
me correctly for my second bit, so I guess they've thought of this
situation, and it's OK.

Interesting one to ponder though - what would happen if you went from a
zone
5 station in to kings cross, then out to a zone 2 station. Perhaps it
makes
the cheapest fare the free one.

Because of the station layout the gates at Kings Cross accept you leaving
and re-entering as it's a designated out of station interchange.

If you travel in from zone 5 and exit at a zone 2 station, going via zone 1,
you'd be charged a single fare for zone 5 to zone 1.