There are Carnet/Oyster validators at end of the long passage from KXSP
tube station to the Thameslink station, enabling pax transferring
between the tube and Thameslink to go straight to the appropriate platform.

Unfortunately the Oyster validators are constantly marked as "Closed"...
meaning you have to go up to the Pentonville Road TL ticket office to
get your ticket (despite there being a good ticket machine right next to
the validators). This isn't brilliant, but it's more of a pain in the
reverse direction since you have to leave your TL train, go up to the
Pentonville Road exit, exit through the barriers with your TL ticket and
turn round to go straight back in again with your Oyster! It's bound to
pull a few odd looks.

I wonder if anyone knows whether this is likely to get fixed soon, or
even the reason why the Oyster validators are constantly "Closed"?

--
Dave Arquati
Imperial College, SW7