"peter" wrote

And there was chaos in the evening too. I arrived at Kings X at abut
18:15, to catch the 18:27 to New Barnet. Onthe board it said 'On time'
until 18:29, when it disappeared, reappearing a few minutes
later as 'Delayed'. Eventually a platform was posted, and it departed at
around 19:00 (by which time the boards were advertising the 18:57 as 'On
Time')

There were no audible announcements made to the station concourse. The
explanation from the information desk was that trains were being diverted
from Moorgate, and this was causing congestion. But if this were true,
there should have been additional departures of these diverted trains on
their return journeys, and yet nothing was posted.

There was disruption again this morning (Wednesday). After travelling in
from Arsenal to KXStP with my daughter, I looked in at King's Cross and
noticed a very odd train on the main departure board - 0839 to Old Street
only. Closer inspection revealed that there was also an 0839 arrival from
Welwyn Garden City showing - perhaps the diverted 0758 WGC - Moorgate? I
assume someone had forgotten to delete the Old Street stop from the system,
which was thus expecting the train to continue there after King's Cross!

As I had time to kill before I could use my £6.65 Advance ticket home to
Retford, I decided to investigate what was happening. I took the Northern
Line to Old Street and joined a northbound FCC service which was waiting
there. After several minutes, it set off but took 20 minutes to Essex Road
and another 20 to Highbury and Islington, where I gave up!