On Mar 8, 1:54*pm, Roland Perry wrote:

In message
, at
04:03:59 on Mon, 8 Mar 2010, Mizter T remarked:

[1] Or more specifically different sets of gatelines - sometimes these
can be at the same station, but the only example I can think of off-
hand is at KXSP, where there is an OSI between the Circle/Met
gateline and the tube ticket hall (and I also now the northern ticket
hall - *I think*) - this is despite the fact that you can circulate
between the Circle/Met platforms and the other lines totally within
the paid-for area.

Don't you need OSI anyway, for people interchanging with Thameslink?

There are multiple OSIs set up at Kings Cross and St Pancras that
cater for all the interchange possibilities - as you say Thameslink is
covered, as are FCC's Great Northern services out of King's Cross.

My comments only referred to the intra-Underground OSI at KXSP - i.e.
I was just trying to point out that the KXSP Underground station
complex has an OSI between different gatelines - between the Circle/
Met gateline and the Tube ticket hall gateline.

I think I've read somewhere that the new northern ticket hall (NTH)
gateline is treated the same as the original tube ticket hall
gateline, but I don't know the details - if so that would suggest that
there's no OSI configured if one was to exit through the NTH gateline
and re-enter at the original tube ticket hall gateline. But I haven't
tested this, and I haven't checked the most recent OSI list that's
been obtained under the FOIA.


(Which reminds us once again what a shame it is there isn't a tunnel
linking to the Thameslink platforms from the tube).

I wonder why this wasn't done - a passageway linking the 'mezzanine'
level (above the Thameslink platforms but effectively a floor below
the ground floor of the rest of St P station) to the newly opened
passageway that links the NTH to the eastern side of St P would indeed
have been a useful thing.

I wonder if there's something else lurking down there that's in the
way? Though most of the 'back-stage' stuff at St P appears to happen
above ground.