I was heading Northbound on the Piccadilly Line this morning at around
00:10hrs.
The train stopped at Holborn and stayed there for 10 minutes before I heard
an announcement amongst people's conversations regarding a passenger action
causing the delay and we may be there for some time.
As I was only travelling to Kings Cross, I left the train and got a
bus/walked the rest of the distance.
Does anybody know what precisely happened to cause this disruption?